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ewiger/mlab
src/mlab/mlabwrap.py
MlabWrap._do
def _do(self, cmd, *args, **kwargs): """Semi-raw execution of a matlab command. Smartly handle calls to matlab, figure out what to do with `args`, and when to use function call syntax and not. If no `args` are specified, the ``cmd`` not ``result = cmd()`` form is used in Matlab -- this also makes literal Matlab commands legal (eg. cmd=``get(gca, 'Children')``). If ``nout=0`` is specified, the Matlab command is executed as procedure, otherwise it is executed as function (default), nout specifying how many values should be returned (default 1). **Beware that if you use don't specify ``nout=0`` for a `cmd` that never returns a value will raise an error** (because assigning a variable to a call that doesn't return a value is illegal in matlab). ``cast`` specifies which typecast should be applied to the result (e.g. `int`), it defaults to none. XXX: should we add ``parens`` parameter? """ handle_out = kwargs.get('handle_out', _flush_write_stdout) #self._session = self._session or mlabraw.open() # HACK if self._autosync_dirs: mlabraw.eval(self._session, "cd('%s');" % os.getcwd().replace("'", "''")) nout = kwargs.get('nout', 1) #XXX what to do with matlab screen output argnames = [] tempargs = [] try: for count, arg in enumerate(args): if isinstance(arg, MlabObjectProxy): argnames.append(arg._name) else: nextName = 'arg%d__' % count argnames.append(nextName) tempargs.append(nextName) # have to convert these by hand ## try: ## arg = self._as_mlabable_type(arg) ## except TypeError: ## raise TypeError("Illegal argument type (%s.:) for %d. argument" % ## (type(arg), type(count))) mlabraw.put(self._session, argnames[-1], arg) if args: cmd = "%s(%s)%s" % (cmd, ", ".join(argnames), ('',';')[kwargs.get('show',0)]) # got three cases for nout: # 0 -> None, 1 -> val, >1 -> [val1, val2, ...] if nout == 0: handle_out(mlabraw.eval(self._session, cmd)) return # deal with matlab-style multiple value return resSL = ((["RES%d__" % i for i in range(nout)])) handle_out(mlabraw.eval(self._session, '[%s]=%s;' % (", ".join(resSL), cmd))) res = self._get_values(resSL) if nout == 1: res = res[0] else: res = tuple(res) if kwargs.has_key('cast'): if nout == 0: raise TypeError("Can't cast: 0 nout") return kwargs['cast'](res) else: return res finally: if len(tempargs) and self._clear_call_args: mlabraw.eval(self._session, "clear('%s');" % "','".join(tempargs))
python
def _do(self, cmd, *args, **kwargs): """Semi-raw execution of a matlab command. Smartly handle calls to matlab, figure out what to do with `args`, and when to use function call syntax and not. If no `args` are specified, the ``cmd`` not ``result = cmd()`` form is used in Matlab -- this also makes literal Matlab commands legal (eg. cmd=``get(gca, 'Children')``). If ``nout=0`` is specified, the Matlab command is executed as procedure, otherwise it is executed as function (default), nout specifying how many values should be returned (default 1). **Beware that if you use don't specify ``nout=0`` for a `cmd` that never returns a value will raise an error** (because assigning a variable to a call that doesn't return a value is illegal in matlab). ``cast`` specifies which typecast should be applied to the result (e.g. `int`), it defaults to none. XXX: should we add ``parens`` parameter? """ handle_out = kwargs.get('handle_out', _flush_write_stdout) #self._session = self._session or mlabraw.open() # HACK if self._autosync_dirs: mlabraw.eval(self._session, "cd('%s');" % os.getcwd().replace("'", "''")) nout = kwargs.get('nout', 1) #XXX what to do with matlab screen output argnames = [] tempargs = [] try: for count, arg in enumerate(args): if isinstance(arg, MlabObjectProxy): argnames.append(arg._name) else: nextName = 'arg%d__' % count argnames.append(nextName) tempargs.append(nextName) # have to convert these by hand ## try: ## arg = self._as_mlabable_type(arg) ## except TypeError: ## raise TypeError("Illegal argument type (%s.:) for %d. argument" % ## (type(arg), type(count))) mlabraw.put(self._session, argnames[-1], arg) if args: cmd = "%s(%s)%s" % (cmd, ", ".join(argnames), ('',';')[kwargs.get('show',0)]) # got three cases for nout: # 0 -> None, 1 -> val, >1 -> [val1, val2, ...] if nout == 0: handle_out(mlabraw.eval(self._session, cmd)) return # deal with matlab-style multiple value return resSL = ((["RES%d__" % i for i in range(nout)])) handle_out(mlabraw.eval(self._session, '[%s]=%s;' % (", ".join(resSL), cmd))) res = self._get_values(resSL) if nout == 1: res = res[0] else: res = tuple(res) if kwargs.has_key('cast'): if nout == 0: raise TypeError("Can't cast: 0 nout") return kwargs['cast'](res) else: return res finally: if len(tempargs) and self._clear_call_args: mlabraw.eval(self._session, "clear('%s');" % "','".join(tempargs))
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Semi-raw execution of a matlab command. Smartly handle calls to matlab, figure out what to do with `args`, and when to use function call syntax and not. If no `args` are specified, the ``cmd`` not ``result = cmd()`` form is used in Matlab -- this also makes literal Matlab commands legal (eg. cmd=``get(gca, 'Children')``). If ``nout=0`` is specified, the Matlab command is executed as procedure, otherwise it is executed as function (default), nout specifying how many values should be returned (default 1). **Beware that if you use don't specify ``nout=0`` for a `cmd` that never returns a value will raise an error** (because assigning a variable to a call that doesn't return a value is illegal in matlab). ``cast`` specifies which typecast should be applied to the result (e.g. `int`), it defaults to none. XXX: should we add ``parens`` parameter?
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/mlabwrap.py#L487-L559
train
ewiger/mlab
src/mlab/mlabwrap.py
MlabWrap._get
def _get(self, name, remove=False): r"""Directly access a variable in matlab space. This should normally not be used by user code.""" # FIXME should this really be needed in normal operation? if name in self._proxies: return self._proxies[name] varname = name vartype = self._var_type(varname) if vartype in self._mlabraw_can_convert: var = mlabraw.get(self._session, varname) if isinstance(var, ndarray): if self._flatten_row_vecs and numpy.shape(var)[0] == 1: var.shape = var.shape[1:2] elif self._flatten_col_vecs and numpy.shape(var)[1] == 1: var.shape = var.shape[0:1] if self._array_cast: var = self._array_cast(var) else: var = None if self._dont_proxy.get(vartype): # manual conversions may fail (e.g. for multidimensional # cell arrays), in that case just fall back on proxying. try: var = self._manually_convert(varname, vartype) except MlabConversionError: pass if var is None: # we can't convert this to a python object, so we just # create a proxy, and don't delete the real matlab # reference until the proxy is garbage collected var = self._make_proxy(varname) if remove: mlabraw.eval(self._session, "clear('%s');" % varname) return var
python
def _get(self, name, remove=False): r"""Directly access a variable in matlab space. This should normally not be used by user code.""" # FIXME should this really be needed in normal operation? if name in self._proxies: return self._proxies[name] varname = name vartype = self._var_type(varname) if vartype in self._mlabraw_can_convert: var = mlabraw.get(self._session, varname) if isinstance(var, ndarray): if self._flatten_row_vecs and numpy.shape(var)[0] == 1: var.shape = var.shape[1:2] elif self._flatten_col_vecs and numpy.shape(var)[1] == 1: var.shape = var.shape[0:1] if self._array_cast: var = self._array_cast(var) else: var = None if self._dont_proxy.get(vartype): # manual conversions may fail (e.g. for multidimensional # cell arrays), in that case just fall back on proxying. try: var = self._manually_convert(varname, vartype) except MlabConversionError: pass if var is None: # we can't convert this to a python object, so we just # create a proxy, and don't delete the real matlab # reference until the proxy is garbage collected var = self._make_proxy(varname) if remove: mlabraw.eval(self._session, "clear('%s');" % varname) return var
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r"""Directly access a variable in matlab space. This should normally not be used by user code.
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/mlabwrap.py#L561-L593
train
ewiger/mlab
src/mlab/mlabwrap.py
MlabWrap._set
def _set(self, name, value): r"""Directly set a variable `name` in matlab space to `value`. This should normally not be used in user code.""" if isinstance(value, MlabObjectProxy): mlabraw.eval(self._session, "%s = %s;" % (name, value._name)) else: ## mlabraw.put(self._session, name, self._as_mlabable_type(value)) mlabraw.put(self._session, name, value)
python
def _set(self, name, value): r"""Directly set a variable `name` in matlab space to `value`. This should normally not be used in user code.""" if isinstance(value, MlabObjectProxy): mlabraw.eval(self._session, "%s = %s;" % (name, value._name)) else: ## mlabraw.put(self._session, name, self._as_mlabable_type(value)) mlabraw.put(self._session, name, value)
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r"""Directly set a variable `name` in matlab space to `value`. This should normally not be used in user code.
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/mlabwrap.py#L595-L603
train
ewiger/mlab
src/mlab/matlabcom.py
MatlabCom.open
def open(self, visible=False): """ Dispatches the matlab COM client. Note: If this method fails, try running matlab with the -regserver flag. """ if self.client: raise MatlabConnectionError('Matlab(TM) COM client is still active. Use close to ' 'close it') self.client = win32com.client.Dispatch('matlab.application') self.client.visible = visible
python
def open(self, visible=False): """ Dispatches the matlab COM client. Note: If this method fails, try running matlab with the -regserver flag. """ if self.client: raise MatlabConnectionError('Matlab(TM) COM client is still active. Use close to ' 'close it') self.client = win32com.client.Dispatch('matlab.application') self.client.visible = visible
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Dispatches the matlab COM client. Note: If this method fails, try running matlab with the -regserver flag.
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/matlabcom.py#L54-L63
train
ewiger/mlab
src/mlab/matlabcom.py
MatlabCom.eval
def eval(self, expression, identify_erros=True): """ Evaluates a matlab expression synchronously. If identify_erros is true, and the last output line after evaluating the expressions begins with '???' an excpetion is thrown with the matlab error following the '???'. The return value of the function is the matlab output following the call. """ #print expression self._check_open() ret = self.client.Execute(expression) #print ret if identify_erros and ret.rfind('???') != -1: begin = ret.rfind('???') + 4 raise MatlabError(ret[begin:]) return ret
python
def eval(self, expression, identify_erros=True): """ Evaluates a matlab expression synchronously. If identify_erros is true, and the last output line after evaluating the expressions begins with '???' an excpetion is thrown with the matlab error following the '???'. The return value of the function is the matlab output following the call. """ #print expression self._check_open() ret = self.client.Execute(expression) #print ret if identify_erros and ret.rfind('???') != -1: begin = ret.rfind('???') + 4 raise MatlabError(ret[begin:]) return ret
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Evaluates a matlab expression synchronously. If identify_erros is true, and the last output line after evaluating the expressions begins with '???' an excpetion is thrown with the matlab error following the '???'. The return value of the function is the matlab output following the call.
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/matlabcom.py#L75-L90
train
ewiger/mlab
src/mlab/matlabcom.py
MatlabCom.get
def get(self, names_to_get, convert_to_numpy=True): """ Loads the requested variables from the matlab com client. names_to_get can be either a variable name or a list of variable names. If it is a variable name, the values is returned. If it is a list, a dictionary of variable_name -> value is returned. If convert_to_numpy is true, the method will all array values to numpy arrays. Scalars are left as regular python objects. """ self._check_open() single_itme = isinstance(names_to_get, (unicode, str)) if single_itme: names_to_get = [names_to_get] ret = {} for name in names_to_get: ret[name] = self.client.GetWorkspaceData(name, 'base') # TODO(daniv): Do we really want to reduce dimensions like that? what if this a row vector? while isinstance(ret[name], (tuple, list)) and len(ret[name]) == 1: ret[name] = ret[name][0] if convert_to_numpy and isinstance(ret[name], (tuple, list)): ret[name] = np.array(ret[name]) if single_itme: return ret.values()[0] return ret
python
def get(self, names_to_get, convert_to_numpy=True): """ Loads the requested variables from the matlab com client. names_to_get can be either a variable name or a list of variable names. If it is a variable name, the values is returned. If it is a list, a dictionary of variable_name -> value is returned. If convert_to_numpy is true, the method will all array values to numpy arrays. Scalars are left as regular python objects. """ self._check_open() single_itme = isinstance(names_to_get, (unicode, str)) if single_itme: names_to_get = [names_to_get] ret = {} for name in names_to_get: ret[name] = self.client.GetWorkspaceData(name, 'base') # TODO(daniv): Do we really want to reduce dimensions like that? what if this a row vector? while isinstance(ret[name], (tuple, list)) and len(ret[name]) == 1: ret[name] = ret[name][0] if convert_to_numpy and isinstance(ret[name], (tuple, list)): ret[name] = np.array(ret[name]) if single_itme: return ret.values()[0] return ret
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Loads the requested variables from the matlab com client. names_to_get can be either a variable name or a list of variable names. If it is a variable name, the values is returned. If it is a list, a dictionary of variable_name -> value is returned. If convert_to_numpy is true, the method will all array values to numpy arrays. Scalars are left as regular python objects.
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/matlabcom.py#L92-L117
train
ewiger/mlab
src/mlab/matlabcom.py
MatlabCom.put
def put(self, name_to_val): """ Loads a dictionary of variable names into the matlab com client. """ self._check_open() for name, val in name_to_val.iteritems(): # First try to put data as a matrix: try: self.client.PutFullMatrix(name, 'base', val, None) except: self.client.PutWorkspaceData(name, 'base', val)
python
def put(self, name_to_val): """ Loads a dictionary of variable names into the matlab com client. """ self._check_open() for name, val in name_to_val.iteritems(): # First try to put data as a matrix: try: self.client.PutFullMatrix(name, 'base', val, None) except: self.client.PutWorkspaceData(name, 'base', val)
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Loads a dictionary of variable names into the matlab com client.
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/matlabcom.py#L119-L128
train
ewiger/mlab
src/mlab/mlabraw.py
open
def open(): global _MATLAB_RELEASE '''Opens MATLAB using specified connection (or DCOM+ protocol on Windows)where matlab_location ''' if is_win: ret = MatlabConnection() ret.open() return ret else: if settings.MATLAB_PATH != 'guess': matlab_path = settings.MATLAB_PATH + '/bin/matlab' elif _MATLAB_RELEASE != 'latest': matlab_path = discover_location(_MATLAB_RELEASE) else: # Latest release is found in __init__.by, i.e. higher logical level raise MatlabReleaseNotFound('Please select a matlab release or set its location.') try: ret = MatlabConnection(matlab_path) ret.open() except Exception: #traceback.print_exc(file=sys.stderr) raise MatlabReleaseNotFound('Could not open matlab, is it in %s?' % matlab_path) return ret
python
def open(): global _MATLAB_RELEASE '''Opens MATLAB using specified connection (or DCOM+ protocol on Windows)where matlab_location ''' if is_win: ret = MatlabConnection() ret.open() return ret else: if settings.MATLAB_PATH != 'guess': matlab_path = settings.MATLAB_PATH + '/bin/matlab' elif _MATLAB_RELEASE != 'latest': matlab_path = discover_location(_MATLAB_RELEASE) else: # Latest release is found in __init__.by, i.e. higher logical level raise MatlabReleaseNotFound('Please select a matlab release or set its location.') try: ret = MatlabConnection(matlab_path) ret.open() except Exception: #traceback.print_exc(file=sys.stderr) raise MatlabReleaseNotFound('Could not open matlab, is it in %s?' % matlab_path) return ret
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Opens MATLAB using specified connection (or DCOM+ protocol on Windows)where matlab_location
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/mlabraw.py#L39-L60
train
ewiger/mlab
src/mlab/matlabpipe.py
_list_releases
def _list_releases(): ''' Tries to guess matlab process release version and location path on osx machines. The paths we will search are in the format: /Applications/MATLAB_R[YEAR][VERSION].app/bin/matlab We will try the latest version first. If no path is found, None is reutrned. ''' if is_linux(): base_path = '/usr/local/MATLAB/R%d%s/bin/matlab' else: # assume mac base_path = '/Applications/MATLAB_R%d%s.app/bin/matlab' years = range(2050,1990,-1) release_letters = ('h', 'g', 'f', 'e', 'd', 'c', 'b', 'a') for year in years: for letter in release_letters: release = 'R%d%s' % (year, letter) matlab_path = base_path % (year, letter) if os.path.exists(matlab_path): yield (release, matlab_path)
python
def _list_releases(): ''' Tries to guess matlab process release version and location path on osx machines. The paths we will search are in the format: /Applications/MATLAB_R[YEAR][VERSION].app/bin/matlab We will try the latest version first. If no path is found, None is reutrned. ''' if is_linux(): base_path = '/usr/local/MATLAB/R%d%s/bin/matlab' else: # assume mac base_path = '/Applications/MATLAB_R%d%s.app/bin/matlab' years = range(2050,1990,-1) release_letters = ('h', 'g', 'f', 'e', 'd', 'c', 'b', 'a') for year in years: for letter in release_letters: release = 'R%d%s' % (year, letter) matlab_path = base_path % (year, letter) if os.path.exists(matlab_path): yield (release, matlab_path)
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Tries to guess matlab process release version and location path on osx machines. The paths we will search are in the format: /Applications/MATLAB_R[YEAR][VERSION].app/bin/matlab We will try the latest version first. If no path is found, None is reutrned.
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/matlabpipe.py#L41-L62
train
ewiger/mlab
src/mlab/matlabpipe.py
is_valid_release_version
def is_valid_release_version(version): '''Checks that the given version code is valid.''' return version is not None and len(version) == 6 and version[0] == 'R' \ and int(version[1:5]) in range(1990, 2050) \ and version[5] in ('h', 'g', 'f', 'e', 'd', 'c', 'b', 'a')
python
def is_valid_release_version(version): '''Checks that the given version code is valid.''' return version is not None and len(version) == 6 and version[0] == 'R' \ and int(version[1:5]) in range(1990, 2050) \ and version[5] in ('h', 'g', 'f', 'e', 'd', 'c', 'b', 'a')
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Checks that the given version code is valid.
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/matlabpipe.py#L72-L76
train
ewiger/mlab
src/mlab/matlabpipe.py
find_matlab_version
def find_matlab_version(process_path): """ Tries to guess matlab's version according to its process path. If we couldn't gues the version, None is returned. """ bin_path = os.path.dirname(process_path) matlab_path = os.path.dirname(bin_path) matlab_dir_name = os.path.basename(matlab_path) version = matlab_dir_name if not is_linux(): version = matlab_dir_name.replace('MATLAB_', '').replace('.app', '') if not is_valid_release_version(version): return None return version
python
def find_matlab_version(process_path): """ Tries to guess matlab's version according to its process path. If we couldn't gues the version, None is returned. """ bin_path = os.path.dirname(process_path) matlab_path = os.path.dirname(bin_path) matlab_dir_name = os.path.basename(matlab_path) version = matlab_dir_name if not is_linux(): version = matlab_dir_name.replace('MATLAB_', '').replace('.app', '') if not is_valid_release_version(version): return None return version
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Tries to guess matlab's version according to its process path. If we couldn't gues the version, None is returned.
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/matlabpipe.py#L91-L104
train
ewiger/mlab
src/mlab/matlabpipe.py
MatlabPipe.open
def open(self, print_matlab_welcome=False): '''Opens the matlab process.''' if self.process and not self.process.returncode: raise MatlabConnectionError('Matlab(TM) process is still active. Use close to ' 'close it') self.process = subprocess.Popen( [self.matlab_process_path, '-nojvm', '-nodesktop'], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.STDOUT) flags = fcntl.fcntl(self.process.stdout, fcntl.F_GETFL) fcntl.fcntl(self.process.stdout, fcntl.F_SETFL, flags| os.O_NONBLOCK) if print_matlab_welcome: self._sync_output() else: self._sync_output(None)
python
def open(self, print_matlab_welcome=False): '''Opens the matlab process.''' if self.process and not self.process.returncode: raise MatlabConnectionError('Matlab(TM) process is still active. Use close to ' 'close it') self.process = subprocess.Popen( [self.matlab_process_path, '-nojvm', '-nodesktop'], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.STDOUT) flags = fcntl.fcntl(self.process.stdout, fcntl.F_GETFL) fcntl.fcntl(self.process.stdout, fcntl.F_SETFL, flags| os.O_NONBLOCK) if print_matlab_welcome: self._sync_output() else: self._sync_output(None)
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Opens the matlab process.
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/matlabpipe.py#L148-L162
train
ewiger/mlab
src/mlab/matlabpipe.py
MatlabPipe.eval
def eval(self, expression, identify_errors=True, print_expression=True, on_new_output=sys.stdout.write): """ Evaluates a matlab expression synchronously. If identify_erros is true, and the last output line after evaluating the expressions begins with '???' and excpetion is thrown with the matlab error following the '???'. If on_new_output is not None, it will be called whenever a new output is encountered. The default value prints the new output to the screen. The return value of the function is the matlab output following the call. """ self._check_open() if print_expression: print expression self.process.stdin.write(expression) self.process.stdin.write('\n') ret = self._sync_output(on_new_output) # TODO(dani): Use stderr to identify errors. if identify_errors and ret.rfind('???') != -1: begin = ret.rfind('???') + 4 end = ret.find('\n', begin) raise MatlabError(ret[begin:end]) return ret
python
def eval(self, expression, identify_errors=True, print_expression=True, on_new_output=sys.stdout.write): """ Evaluates a matlab expression synchronously. If identify_erros is true, and the last output line after evaluating the expressions begins with '???' and excpetion is thrown with the matlab error following the '???'. If on_new_output is not None, it will be called whenever a new output is encountered. The default value prints the new output to the screen. The return value of the function is the matlab output following the call. """ self._check_open() if print_expression: print expression self.process.stdin.write(expression) self.process.stdin.write('\n') ret = self._sync_output(on_new_output) # TODO(dani): Use stderr to identify errors. if identify_errors and ret.rfind('???') != -1: begin = ret.rfind('???') + 4 end = ret.find('\n', begin) raise MatlabError(ret[begin:end]) return ret
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Evaluates a matlab expression synchronously. If identify_erros is true, and the last output line after evaluating the expressions begins with '???' and excpetion is thrown with the matlab error following the '???'. If on_new_output is not None, it will be called whenever a new output is encountered. The default value prints the new output to the screen. The return value of the function is the matlab output following the call.
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/matlabpipe.py#L170-L195
train
ewiger/mlab
src/mlab/matlabpipe.py
MatlabPipe.put
def put(self, name_to_val, oned_as='row', on_new_output=None): """ Loads a dictionary of variable names into the matlab shell. oned_as is the same as in scipy.io.matlab.savemat function: oned_as : {'column', 'row'}, optional If 'column', write 1-D numpy arrays as column vectors. If 'row', write 1D numpy arrays as row vectors. """ self._check_open() # We can't give stdin to mlabio.savemat because it needs random access :( temp = StringIO() mlabio.savemat(temp, name_to_val, oned_as=oned_as) temp.seek(0) temp_str = temp.read() temp.close() self.process.stdin.write('load stdio;\n') self._read_until('ack load stdio\n', on_new_output=on_new_output) self.process.stdin.write(temp_str) #print 'sent %d kb' % (len(temp_str) / 1024) self._read_until('ack load finished\n', on_new_output=on_new_output) self._sync_output(on_new_output=on_new_output)
python
def put(self, name_to_val, oned_as='row', on_new_output=None): """ Loads a dictionary of variable names into the matlab shell. oned_as is the same as in scipy.io.matlab.savemat function: oned_as : {'column', 'row'}, optional If 'column', write 1-D numpy arrays as column vectors. If 'row', write 1D numpy arrays as row vectors. """ self._check_open() # We can't give stdin to mlabio.savemat because it needs random access :( temp = StringIO() mlabio.savemat(temp, name_to_val, oned_as=oned_as) temp.seek(0) temp_str = temp.read() temp.close() self.process.stdin.write('load stdio;\n') self._read_until('ack load stdio\n', on_new_output=on_new_output) self.process.stdin.write(temp_str) #print 'sent %d kb' % (len(temp_str) / 1024) self._read_until('ack load finished\n', on_new_output=on_new_output) self._sync_output(on_new_output=on_new_output)
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/matlabpipe.py#L198-L218
train
ewiger/mlab
src/mlab/matlabpipe.py
MatlabPipe.get
def get(self, names_to_get, extract_numpy_scalars=True, on_new_output=None): """ Loads the requested variables from the matlab shell. names_to_get can be either a variable name, a list of variable names, or None. If it is a variable name, the values is returned. If it is a list, a dictionary of variable_name -> value is returned. If it is None, a dictionary with all variables is returned. If extract_numpy_scalars is true, the method will convert numpy scalars (0-dimension arrays) to a regular python variable. """ self._check_open() single_item = isinstance(names_to_get, (unicode, str)) if single_item: names_to_get = [names_to_get] if names_to_get == None: self.process.stdin.write('save stdio;\n') else: # Make sure that we throw an excpetion if the names are not defined. for name in names_to_get: self.eval('%s;' % name, print_expression=False, on_new_output=on_new_output) #print 'save(\'stdio\', \'%s\');\n' % '\', \''.join(names_to_get) self.process.stdin.write( "save('stdio', '%s', '-v7');\n" % '\', \''.join(names_to_get)) # We have to read to a temp buffer because mlabio.loadmat needs # random access :( self._read_until('start_binary\n', on_new_output=on_new_output) #print 'got start_binary' temp_str = self._sync_output(on_new_output=on_new_output) #print 'got all outout' # Remove expected output and "\n>>" # TODO(dani): Get rid of the unecessary copy. # MATLAB 2010a adds an extra >> so we need to remove more spaces. if self.matlab_version == (2010, 'a'): temp_str = temp_str[:-len(self.expected_output_end)-6] else: temp_str = temp_str[:-len(self.expected_output_end)-3] temp = StringIO(temp_str) #print ('____') #print len(temp_str) #print ('____') ret = mlabio.loadmat(temp, chars_as_strings=True, squeeze_me=True) #print '******' #print ret #print '******' temp.close() if single_item: return ret.values()[0] for key in ret.iterkeys(): while ret[key].shape and ret[key].shape[-1] == 1: ret[key] = ret[key][0] if extract_numpy_scalars: if isinstance(ret[key], np.ndarray) and not ret[key].shape: ret[key] = ret[key].tolist() #print 'done' return ret
python
def get(self, names_to_get, extract_numpy_scalars=True, on_new_output=None): """ Loads the requested variables from the matlab shell. names_to_get can be either a variable name, a list of variable names, or None. If it is a variable name, the values is returned. If it is a list, a dictionary of variable_name -> value is returned. If it is None, a dictionary with all variables is returned. If extract_numpy_scalars is true, the method will convert numpy scalars (0-dimension arrays) to a regular python variable. """ self._check_open() single_item = isinstance(names_to_get, (unicode, str)) if single_item: names_to_get = [names_to_get] if names_to_get == None: self.process.stdin.write('save stdio;\n') else: # Make sure that we throw an excpetion if the names are not defined. for name in names_to_get: self.eval('%s;' % name, print_expression=False, on_new_output=on_new_output) #print 'save(\'stdio\', \'%s\');\n' % '\', \''.join(names_to_get) self.process.stdin.write( "save('stdio', '%s', '-v7');\n" % '\', \''.join(names_to_get)) # We have to read to a temp buffer because mlabio.loadmat needs # random access :( self._read_until('start_binary\n', on_new_output=on_new_output) #print 'got start_binary' temp_str = self._sync_output(on_new_output=on_new_output) #print 'got all outout' # Remove expected output and "\n>>" # TODO(dani): Get rid of the unecessary copy. # MATLAB 2010a adds an extra >> so we need to remove more spaces. if self.matlab_version == (2010, 'a'): temp_str = temp_str[:-len(self.expected_output_end)-6] else: temp_str = temp_str[:-len(self.expected_output_end)-3] temp = StringIO(temp_str) #print ('____') #print len(temp_str) #print ('____') ret = mlabio.loadmat(temp, chars_as_strings=True, squeeze_me=True) #print '******' #print ret #print '******' temp.close() if single_item: return ret.values()[0] for key in ret.iterkeys(): while ret[key].shape and ret[key].shape[-1] == 1: ret[key] = ret[key][0] if extract_numpy_scalars: if isinstance(ret[key], np.ndarray) and not ret[key].shape: ret[key] = ret[key].tolist() #print 'done' return ret
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Loads the requested variables from the matlab shell. names_to_get can be either a variable name, a list of variable names, or None. If it is a variable name, the values is returned. If it is a list, a dictionary of variable_name -> value is returned. If it is None, a dictionary with all variables is returned. If extract_numpy_scalars is true, the method will convert numpy scalars (0-dimension arrays) to a regular python variable.
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/matlabpipe.py#L220-L279
train
ewiger/mlab
src/mlab/awmstools.py
rexGroups
def rexGroups(rex): """Return the named groups in a regular expression (compiled or as string) in occuring order. >>> rexGroups(r'(?P<name>\w+) +(?P<surname>\w+)') ('name', 'surname') """ if isinstance(rex,basestring): rex = re.compile(rex) return zip(*sorted([(n,g) for (g,n) in rex.groupindex.items()]))[1]
python
def rexGroups(rex): """Return the named groups in a regular expression (compiled or as string) in occuring order. >>> rexGroups(r'(?P<name>\w+) +(?P<surname>\w+)') ('name', 'surname') """ if isinstance(rex,basestring): rex = re.compile(rex) return zip(*sorted([(n,g) for (g,n) in rex.groupindex.items()]))[1]
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Return the named groups in a regular expression (compiled or as string) in occuring order. >>> rexGroups(r'(?P<name>\w+) +(?P<surname>\w+)') ('name', 'surname')
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L140-L149
train
ewiger/mlab
src/mlab/awmstools.py
div
def div(a,b): """``div(a,b)`` is like ``a // b`` if ``b`` devides ``a``, otherwise an `ValueError` is raised. >>> div(10,2) 5 >>> div(10,3) Traceback (most recent call last): ... ValueError: 3 does not divide 10 """ res, fail = divmod(a,b) if fail: raise ValueError("%r does not divide %r" % (b,a)) else: return res
python
def div(a,b): """``div(a,b)`` is like ``a // b`` if ``b`` devides ``a``, otherwise an `ValueError` is raised. >>> div(10,2) 5 >>> div(10,3) Traceback (most recent call last): ... ValueError: 3 does not divide 10 """ res, fail = divmod(a,b) if fail: raise ValueError("%r does not divide %r" % (b,a)) else: return res
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``div(a,b)`` is like ``a // b`` if ``b`` devides ``a``, otherwise an `ValueError` is raised. >>> div(10,2) 5 >>> div(10,3) Traceback (most recent call last): ... ValueError: 3 does not divide 10
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L243-L258
train
ewiger/mlab
src/mlab/awmstools.py
ipshuffle
def ipshuffle(l, random=None): r"""Shuffle list `l` inplace and return it.""" import random as _random _random.shuffle(l, random) return l
python
def ipshuffle(l, random=None): r"""Shuffle list `l` inplace and return it.""" import random as _random _random.shuffle(l, random) return l
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r"""Shuffle list `l` inplace and return it.
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L261-L265
train
ewiger/mlab
src/mlab/awmstools.py
shuffle
def shuffle(seq, random=None): r"""Return shuffled *copy* of `seq`.""" if isinstance(seq, list): return ipshuffle(seq[:], random) elif isString(seq): # seq[0:0] == "" or u"" return seq[0:0].join(ipshuffle(list(seq)),random) else: return type(seq)(ipshuffle(list(seq),random))
python
def shuffle(seq, random=None): r"""Return shuffled *copy* of `seq`.""" if isinstance(seq, list): return ipshuffle(seq[:], random) elif isString(seq): # seq[0:0] == "" or u"" return seq[0:0].join(ipshuffle(list(seq)),random) else: return type(seq)(ipshuffle(list(seq),random))
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r"""Return shuffled *copy* of `seq`.
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L281-L289
train
ewiger/mlab
src/mlab/awmstools.py
slurp
def slurp(file, binary=False, expand=False): r"""Read in a complete file `file` as a string Parameters: - `file`: a file handle or a string (`str` or `unicode`). - `binary`: whether to read in the file in binary mode (default: False). """ mode = "r" + ["b",""][not binary] file = _normalizeToFile(file, mode=mode, expand=expand) try: return file.read() finally: file.close()
python
def slurp(file, binary=False, expand=False): r"""Read in a complete file `file` as a string Parameters: - `file`: a file handle or a string (`str` or `unicode`). - `binary`: whether to read in the file in binary mode (default: False). """ mode = "r" + ["b",""][not binary] file = _normalizeToFile(file, mode=mode, expand=expand) try: return file.read() finally: file.close()
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r"""Read in a complete file `file` as a string Parameters: - `file`: a file handle or a string (`str` or `unicode`). - `binary`: whether to read in the file in binary mode (default: False).
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L322-L332
train
ewiger/mlab
src/mlab/awmstools.py
withFile
def withFile(file, func, mode='r', expand=False): """Pass `file` to `func` and ensure the file is closed afterwards. If `file` is a string, open according to `mode`; if `expand` is true also expand user and vars. """ file = _normalizeToFile(file, mode=mode, expand=expand) try: return func(file) finally: file.close()
python
def withFile(file, func, mode='r', expand=False): """Pass `file` to `func` and ensure the file is closed afterwards. If `file` is a string, open according to `mode`; if `expand` is true also expand user and vars. """ file = _normalizeToFile(file, mode=mode, expand=expand) try: return func(file) finally: file.close()
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Pass `file` to `func` and ensure the file is closed afterwards. If `file` is a string, open according to `mode`; if `expand` is true also expand user and vars.
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L335-L342
train
ewiger/mlab
src/mlab/awmstools.py
slurpLines
def slurpLines(file, expand=False): r"""Read in a complete file (specified by a file handler or a filename string/unicode string) as list of lines""" file = _normalizeToFile(file, "r", expand) try: return file.readlines() finally: file.close()
python
def slurpLines(file, expand=False): r"""Read in a complete file (specified by a file handler or a filename string/unicode string) as list of lines""" file = _normalizeToFile(file, "r", expand) try: return file.readlines() finally: file.close()
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r"""Read in a complete file (specified by a file handler or a filename string/unicode string) as list of lines
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L345-L350
train
ewiger/mlab
src/mlab/awmstools.py
slurpChompedLines
def slurpChompedLines(file, expand=False): r"""Return ``file`` a list of chomped lines. See `slurpLines`.""" f=_normalizeToFile(file, "r", expand) try: return list(chompLines(f)) finally: f.close()
python
def slurpChompedLines(file, expand=False): r"""Return ``file`` a list of chomped lines. See `slurpLines`.""" f=_normalizeToFile(file, "r", expand) try: return list(chompLines(f)) finally: f.close()
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r"""Return ``file`` a list of chomped lines. See `slurpLines`.
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L352-L356
train
ewiger/mlab
src/mlab/awmstools.py
strToTempfile
def strToTempfile(s, suffix=None, prefix=None, dir=None, binary=False): """Create a new tempfile, write ``s`` to it and return the filename. `suffix`, `prefix` and `dir` are like in `tempfile.mkstemp`. """ fd, filename = tempfile.mkstemp(**dict((k,v) for (k,v) in [('suffix',suffix),('prefix',prefix),('dir', dir)] if v is not None)) spitOut(s, fd, binary) return filename
python
def strToTempfile(s, suffix=None, prefix=None, dir=None, binary=False): """Create a new tempfile, write ``s`` to it and return the filename. `suffix`, `prefix` and `dir` are like in `tempfile.mkstemp`. """ fd, filename = tempfile.mkstemp(**dict((k,v) for (k,v) in [('suffix',suffix),('prefix',prefix),('dir', dir)] if v is not None)) spitOut(s, fd, binary) return filename
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L358-L366
train
ewiger/mlab
src/mlab/awmstools.py
spitOut
def spitOut(s, file, binary=False, expand=False): r"""Write string `s` into `file` (which can be a string (`str` or `unicode`) or a `file` instance).""" mode = "w" + ["b",""][not binary] file = _normalizeToFile(file, mode=mode, expand=expand) try: file.write(s) finally: file.close()
python
def spitOut(s, file, binary=False, expand=False): r"""Write string `s` into `file` (which can be a string (`str` or `unicode`) or a `file` instance).""" mode = "w" + ["b",""][not binary] file = _normalizeToFile(file, mode=mode, expand=expand) try: file.write(s) finally: file.close()
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r"""Write string `s` into `file` (which can be a string (`str` or `unicode`) or a `file` instance).
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L369-L375
train
ewiger/mlab
src/mlab/awmstools.py
spitOutLines
def spitOutLines(lines, file, expand=False): r"""Write all the `lines` to `file` (which can be a string/unicode or a file handler).""" file = _normalizeToFile(file, mode="w", expand=expand) try: file.writelines(lines) finally: file.close()
python
def spitOutLines(lines, file, expand=False): r"""Write all the `lines` to `file` (which can be a string/unicode or a file handler).""" file = _normalizeToFile(file, mode="w", expand=expand) try: file.writelines(lines) finally: file.close()
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r"""Write all the `lines` to `file` (which can be a string/unicode or a file handler).
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L377-L382
train
ewiger/mlab
src/mlab/awmstools.py
readProcess
def readProcess(cmd, *args): r"""Similar to `os.popen3`, but returns 2 strings (stdin, stdout) and the exit code (unlike popen2, exit is 0 if no problems occured (for some bizarre reason popen2 returns None... <sigh>). FIXME: only works for UNIX; handling of signalled processes. """ import popen2 BUFSIZE=1024 import select popen = popen2.Popen3((cmd,) + args, capturestderr=True) which = {id(popen.fromchild): [], id(popen.childerr): []} select = Result(select.select) read = Result(os.read) try: popen.tochild.close() # XXX make sure we're not waiting forever while select([popen.fromchild, popen.childerr], [], []): readSomething = False for f in select.result[0]: while read(f.fileno(), BUFSIZE): which[id(f)].append(read.result) readSomething = True if not readSomething: break out, err = ["".join(which[id(f)]) for f in [popen.fromchild, popen.childerr]] returncode = popen.wait() if os.WIFEXITED(returncode): exit = os.WEXITSTATUS(returncode) else: exit = returncode or 1 # HACK: ensure non-zero finally: try: popen.fromchild.close() finally: popen.childerr.close() return out or "", err or "", exit
python
def readProcess(cmd, *args): r"""Similar to `os.popen3`, but returns 2 strings (stdin, stdout) and the exit code (unlike popen2, exit is 0 if no problems occured (for some bizarre reason popen2 returns None... <sigh>). FIXME: only works for UNIX; handling of signalled processes. """ import popen2 BUFSIZE=1024 import select popen = popen2.Popen3((cmd,) + args, capturestderr=True) which = {id(popen.fromchild): [], id(popen.childerr): []} select = Result(select.select) read = Result(os.read) try: popen.tochild.close() # XXX make sure we're not waiting forever while select([popen.fromchild, popen.childerr], [], []): readSomething = False for f in select.result[0]: while read(f.fileno(), BUFSIZE): which[id(f)].append(read.result) readSomething = True if not readSomething: break out, err = ["".join(which[id(f)]) for f in [popen.fromchild, popen.childerr]] returncode = popen.wait() if os.WIFEXITED(returncode): exit = os.WEXITSTATUS(returncode) else: exit = returncode or 1 # HACK: ensure non-zero finally: try: popen.fromchild.close() finally: popen.childerr.close() return out or "", err or "", exit
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r"""Similar to `os.popen3`, but returns 2 strings (stdin, stdout) and the exit code (unlike popen2, exit is 0 if no problems occured (for some bizarre reason popen2 returns None... <sigh>). FIXME: only works for UNIX; handling of signalled processes.
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L386-L424
train
ewiger/mlab
src/mlab/awmstools.py
runProcess
def runProcess(cmd, *args): """Run `cmd` (which is searched for in the executable path) with `args` and return the exit status. In general (unless you know what you're doing) use:: runProcess('program', filename) rather than:: os.system('program %s' % filename) because the latter will not work as expected if `filename` contains spaces or shell-metacharacters. If you need more fine-grained control look at ``os.spawn*``. """ from os import spawnvp, P_WAIT return spawnvp(P_WAIT, cmd, (cmd,) + args)
python
def runProcess(cmd, *args): """Run `cmd` (which is searched for in the executable path) with `args` and return the exit status. In general (unless you know what you're doing) use:: runProcess('program', filename) rather than:: os.system('program %s' % filename) because the latter will not work as expected if `filename` contains spaces or shell-metacharacters. If you need more fine-grained control look at ``os.spawn*``. """ from os import spawnvp, P_WAIT return spawnvp(P_WAIT, cmd, (cmd,) + args)
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Run `cmd` (which is searched for in the executable path) with `args` and return the exit status. In general (unless you know what you're doing) use:: runProcess('program', filename) rather than:: os.system('program %s' % filename) because the latter will not work as expected if `filename` contains spaces or shell-metacharacters. If you need more fine-grained control look at ``os.spawn*``.
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L432-L450
train
ewiger/mlab
src/mlab/awmstools.py
splitext
def splitext(p): r"""Like the normal splitext (in posixpath), but doesn't treat dotfiles (e.g. .emacs) as extensions. Also uses os.sep instead of '/'.""" root, ext = os.path.splitext(p) # check for dotfiles if (not root or root[-1] == os.sep): # XXX: use '/' or os.sep here??? return (root + ext, "") else: return root, ext
python
def splitext(p): r"""Like the normal splitext (in posixpath), but doesn't treat dotfiles (e.g. .emacs) as extensions. Also uses os.sep instead of '/'.""" root, ext = os.path.splitext(p) # check for dotfiles if (not root or root[-1] == os.sep): # XXX: use '/' or os.sep here??? return (root + ext, "") else: return root, ext
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r"""Like the normal splitext (in posixpath), but doesn't treat dotfiles (e.g. .emacs) as extensions. Also uses os.sep instead of '/'.
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L463-L472
train
ewiger/mlab
src/mlab/awmstools.py
bipart
def bipart(func, seq): r"""Like a partitioning version of `filter`. Returns ``[itemsForWhichFuncReturnedFalse, itemsForWhichFuncReturnedTrue]``. Example: >>> bipart(bool, [1,None,2,3,0,[],[0]]) [[None, 0, []], [1, 2, 3, [0]]] """ if func is None: func = bool res = [[],[]] for i in seq: res[not not func(i)].append(i) return res
python
def bipart(func, seq): r"""Like a partitioning version of `filter`. Returns ``[itemsForWhichFuncReturnedFalse, itemsForWhichFuncReturnedTrue]``. Example: >>> bipart(bool, [1,None,2,3,0,[],[0]]) [[None, 0, []], [1, 2, 3, [0]]] """ if func is None: func = bool res = [[],[]] for i in seq: res[not not func(i)].append(i) return res
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r"""Like a partitioning version of `filter`. Returns ``[itemsForWhichFuncReturnedFalse, itemsForWhichFuncReturnedTrue]``. Example: >>> bipart(bool, [1,None,2,3,0,[],[0]]) [[None, 0, []], [1, 2, 3, [0]]]
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L478-L491
train
ewiger/mlab
src/mlab/awmstools.py
binarySearchPos
def binarySearchPos(seq, item, cmpfunc=cmp): r"""Return the position of `item` in ordered sequence `seq`, using comparison function `cmpfunc` (defaults to ``cmp``) and return the first found position of `item`, or -1 if `item` is not in `seq`. The returned position is NOT guaranteed to be the first occurence of `item` in `seq`.""" if not seq: return -1 left, right = 0, len(seq) - 1 if cmpfunc(seq[left], item) == 1 and \ cmpfunc(seq[right], item) == -1: return -1 while left <= right: halfPoint = (left + right) // 2 comp = cmpfunc(seq[halfPoint], item) if comp > 0: right = halfPoint - 1 elif comp < 0: left = halfPoint + 1 else: return halfPoint return -1
python
def binarySearchPos(seq, item, cmpfunc=cmp): r"""Return the position of `item` in ordered sequence `seq`, using comparison function `cmpfunc` (defaults to ``cmp``) and return the first found position of `item`, or -1 if `item` is not in `seq`. The returned position is NOT guaranteed to be the first occurence of `item` in `seq`.""" if not seq: return -1 left, right = 0, len(seq) - 1 if cmpfunc(seq[left], item) == 1 and \ cmpfunc(seq[right], item) == -1: return -1 while left <= right: halfPoint = (left + right) // 2 comp = cmpfunc(seq[halfPoint], item) if comp > 0: right = halfPoint - 1 elif comp < 0: left = halfPoint + 1 else: return halfPoint return -1
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r"""Return the position of `item` in ordered sequence `seq`, using comparison function `cmpfunc` (defaults to ``cmp``) and return the first found position of `item`, or -1 if `item` is not in `seq`. The returned position is NOT guaranteed to be the first occurence of `item` in `seq`.
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L499-L516
train
ewiger/mlab
src/mlab/awmstools.py
binarySearchItem
def binarySearchItem(seq, item, cmpfunc=cmp): r""" Search an ordered sequence `seq` for `item`, using comparison function `cmpfunc` (defaults to ``cmp``) and return the first found instance of `item`, or `None` if item is not in `seq`. The returned item is NOT guaranteed to be the first occurrence of item in `seq`.""" pos = binarySearchPos(seq, item, cmpfunc) if pos == -1: raise KeyError("Item not in seq") else: return seq[pos]
python
def binarySearchItem(seq, item, cmpfunc=cmp): r""" Search an ordered sequence `seq` for `item`, using comparison function `cmpfunc` (defaults to ``cmp``) and return the first found instance of `item`, or `None` if item is not in `seq`. The returned item is NOT guaranteed to be the first occurrence of item in `seq`.""" pos = binarySearchPos(seq, item, cmpfunc) if pos == -1: raise KeyError("Item not in seq") else: return seq[pos]
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r""" Search an ordered sequence `seq` for `item`, using comparison function `cmpfunc` (defaults to ``cmp``) and return the first found instance of `item`, or `None` if item is not in `seq`. The returned item is NOT guaranteed to be the first occurrence of item in `seq`.
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L536-L543
train
ewiger/mlab
src/mlab/awmstools.py
rotate
def rotate(l, steps=1): r"""Rotates a list `l` `steps` to the left. Accepts `steps` > `len(l)` or < 0. >>> rotate([1,2,3]) [2, 3, 1] >>> rotate([1,2,3,4],-2) [3, 4, 1, 2] >>> rotate([1,2,3,4],-5) [4, 1, 2, 3] >>> rotate([1,2,3,4],1) [2, 3, 4, 1] >>> l = [1,2,3]; rotate(l) is not l True """ if len(l): steps %= len(l) if steps: res = l[steps:] res.extend(l[:steps]) return res
python
def rotate(l, steps=1): r"""Rotates a list `l` `steps` to the left. Accepts `steps` > `len(l)` or < 0. >>> rotate([1,2,3]) [2, 3, 1] >>> rotate([1,2,3,4],-2) [3, 4, 1, 2] >>> rotate([1,2,3,4],-5) [4, 1, 2, 3] >>> rotate([1,2,3,4],1) [2, 3, 4, 1] >>> l = [1,2,3]; rotate(l) is not l True """ if len(l): steps %= len(l) if steps: res = l[steps:] res.extend(l[:steps]) return res
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r"""Rotates a list `l` `steps` to the left. Accepts `steps` > `len(l)` or < 0. >>> rotate([1,2,3]) [2, 3, 1] >>> rotate([1,2,3,4],-2) [3, 4, 1, 2] >>> rotate([1,2,3,4],-5) [4, 1, 2, 3] >>> rotate([1,2,3,4],1) [2, 3, 4, 1] >>> l = [1,2,3]; rotate(l) is not l True
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L546-L566
train
ewiger/mlab
src/mlab/awmstools.py
iprotate
def iprotate(l, steps=1): r"""Like rotate, but modifies `l` in-place. >>> l = [1,2,3] >>> iprotate(l) is l True >>> l [2, 3, 1] >>> iprotate(iprotate(l, 2), -3) [1, 2, 3] """ if len(l): steps %= len(l) if steps: firstPart = l[:steps] del l[:steps] l.extend(firstPart) return l
python
def iprotate(l, steps=1): r"""Like rotate, but modifies `l` in-place. >>> l = [1,2,3] >>> iprotate(l) is l True >>> l [2, 3, 1] >>> iprotate(iprotate(l, 2), -3) [1, 2, 3] """ if len(l): steps %= len(l) if steps: firstPart = l[:steps] del l[:steps] l.extend(firstPart) return l
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r"""Like rotate, but modifies `l` in-place. >>> l = [1,2,3] >>> iprotate(l) is l True >>> l [2, 3, 1] >>> iprotate(iprotate(l, 2), -3) [1, 2, 3]
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L568-L586
train
ewiger/mlab
src/mlab/awmstools.py
unique
def unique(iterable): r"""Returns all unique items in `iterable` in the *same* order (only works if items in `seq` are hashable). """ d = {} return (d.setdefault(x,x) for x in iterable if x not in d)
python
def unique(iterable): r"""Returns all unique items in `iterable` in the *same* order (only works if items in `seq` are hashable). """ d = {} return (d.setdefault(x,x) for x in iterable if x not in d)
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r"""Returns all unique items in `iterable` in the *same* order (only works if items in `seq` are hashable).
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L594-L599
train
ewiger/mlab
src/mlab/awmstools.py
notUnique
def notUnique(iterable, reportMax=INF): """Returns the elements in `iterable` that aren't unique; stops after it found `reportMax` non-unique elements. Examples: >>> list(notUnique([1,1,2,2,3,3])) [1, 2, 3] >>> list(notUnique([1,1,2,2,3,3], 1)) [1] """ hash = {} n=0 if reportMax < 1: raise ValueError("`reportMax` must be >= 1 and is %r" % reportMax) for item in iterable: count = hash[item] = hash.get(item, 0) + 1 if count > 1: yield item n += 1 if n >= reportMax: return
python
def notUnique(iterable, reportMax=INF): """Returns the elements in `iterable` that aren't unique; stops after it found `reportMax` non-unique elements. Examples: >>> list(notUnique([1,1,2,2,3,3])) [1, 2, 3] >>> list(notUnique([1,1,2,2,3,3], 1)) [1] """ hash = {} n=0 if reportMax < 1: raise ValueError("`reportMax` must be >= 1 and is %r" % reportMax) for item in iterable: count = hash[item] = hash.get(item, 0) + 1 if count > 1: yield item n += 1 if n >= reportMax: return
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Returns the elements in `iterable` that aren't unique; stops after it found `reportMax` non-unique elements. Examples: >>> list(notUnique([1,1,2,2,3,3])) [1, 2, 3] >>> list(notUnique([1,1,2,2,3,3], 1)) [1]
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L614-L635
train
ewiger/mlab
src/mlab/awmstools.py
unweave
def unweave(iterable, n=2): r"""Divide `iterable` in `n` lists, so that every `n`th element belongs to list `n`. Example: >>> unweave((1,2,3,4,5), 3) [[1, 4], [2, 5], [3]] """ res = [[] for i in range(n)] i = 0 for x in iterable: res[i % n].append(x) i += 1 return res
python
def unweave(iterable, n=2): r"""Divide `iterable` in `n` lists, so that every `n`th element belongs to list `n`. Example: >>> unweave((1,2,3,4,5), 3) [[1, 4], [2, 5], [3]] """ res = [[] for i in range(n)] i = 0 for x in iterable: res[i % n].append(x) i += 1 return res
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r"""Divide `iterable` in `n` lists, so that every `n`th element belongs to list `n`. Example: >>> unweave((1,2,3,4,5), 3) [[1, 4], [2, 5], [3]]
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L655-L669
train
ewiger/mlab
src/mlab/awmstools.py
weave
def weave(*iterables): r"""weave(seq1 [, seq2] [...]) -> iter([seq1[0], seq2[0] ...]). >>> list(weave([1,2,3], [4,5,6,'A'], [6,7,8, 'B', 'C'])) [1, 4, 6, 2, 5, 7, 3, 6, 8] Any iterable will work. The first exhausted iterable determines when to stop. FIXME rethink stopping semantics. >>> list(weave(iter(('is','psu')), ('there','no', 'censorship'))) ['is', 'there', 'psu', 'no'] >>> list(weave(('there','no', 'censorship'), iter(('is','psu')))) ['there', 'is', 'no', 'psu', 'censorship'] """ iterables = map(iter, iterables) while True: for it in iterables: yield it.next()
python
def weave(*iterables): r"""weave(seq1 [, seq2] [...]) -> iter([seq1[0], seq2[0] ...]). >>> list(weave([1,2,3], [4,5,6,'A'], [6,7,8, 'B', 'C'])) [1, 4, 6, 2, 5, 7, 3, 6, 8] Any iterable will work. The first exhausted iterable determines when to stop. FIXME rethink stopping semantics. >>> list(weave(iter(('is','psu')), ('there','no', 'censorship'))) ['is', 'there', 'psu', 'no'] >>> list(weave(('there','no', 'censorship'), iter(('is','psu')))) ['there', 'is', 'no', 'psu', 'censorship'] """ iterables = map(iter, iterables) while True: for it in iterables: yield it.next()
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r"""weave(seq1 [, seq2] [...]) -> iter([seq1[0], seq2[0] ...]). >>> list(weave([1,2,3], [4,5,6,'A'], [6,7,8, 'B', 'C'])) [1, 4, 6, 2, 5, 7, 3, 6, 8] Any iterable will work. The first exhausted iterable determines when to stop. FIXME rethink stopping semantics. >>> list(weave(iter(('is','psu')), ('there','no', 'censorship'))) ['is', 'there', 'psu', 'no'] >>> list(weave(('there','no', 'censorship'), iter(('is','psu')))) ['there', 'is', 'no', 'psu', 'censorship']
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L674-L690
train
ewiger/mlab
src/mlab/awmstools.py
atIndices
def atIndices(indexable, indices, default=__unique): r"""Return a list of items in `indexable` at positions `indices`. Examples: >>> atIndices([1,2,3], [1,1,0]) [2, 2, 1] >>> atIndices([1,2,3], [1,1,0,4], 'default') [2, 2, 1, 'default'] >>> atIndices({'a':3, 'b':0}, ['a']) [3] """ if default is __unique: return [indexable[i] for i in indices] else: res = [] for i in indices: try: res.append(indexable[i]) except (IndexError, KeyError): res.append(default) return res
python
def atIndices(indexable, indices, default=__unique): r"""Return a list of items in `indexable` at positions `indices`. Examples: >>> atIndices([1,2,3], [1,1,0]) [2, 2, 1] >>> atIndices([1,2,3], [1,1,0,4], 'default') [2, 2, 1, 'default'] >>> atIndices({'a':3, 'b':0}, ['a']) [3] """ if default is __unique: return [indexable[i] for i in indices] else: res = [] for i in indices: try: res.append(indexable[i]) except (IndexError, KeyError): res.append(default) return res
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r"""Return a list of items in `indexable` at positions `indices`. Examples: >>> atIndices([1,2,3], [1,1,0]) [2, 2, 1] >>> atIndices([1,2,3], [1,1,0,4], 'default') [2, 2, 1, 'default'] >>> atIndices({'a':3, 'b':0}, ['a']) [3]
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L692-L713
train
ewiger/mlab
src/mlab/awmstools.py
window
def window(iterable, n=2, s=1): r"""Move an `n`-item (default 2) windows `s` steps (default 1) at a time over `iterable`. Examples: >>> list(window(range(6),2)) [(0, 1), (1, 2), (2, 3), (3, 4), (4, 5)] >>> list(window(range(6),3)) [(0, 1, 2), (1, 2, 3), (2, 3, 4), (3, 4, 5)] >>> list(window(range(6),3, 2)) [(0, 1, 2), (2, 3, 4)] >>> list(window(range(5),3,2)) == list(window(range(6),3,2)) True """ assert n >= s last = [] for elt in iterable: last.append(elt) if len(last) == n: yield tuple(last); last=last[s:]
python
def window(iterable, n=2, s=1): r"""Move an `n`-item (default 2) windows `s` steps (default 1) at a time over `iterable`. Examples: >>> list(window(range(6),2)) [(0, 1), (1, 2), (2, 3), (3, 4), (4, 5)] >>> list(window(range(6),3)) [(0, 1, 2), (1, 2, 3), (2, 3, 4), (3, 4, 5)] >>> list(window(range(6),3, 2)) [(0, 1, 2), (2, 3, 4)] >>> list(window(range(5),3,2)) == list(window(range(6),3,2)) True """ assert n >= s last = [] for elt in iterable: last.append(elt) if len(last) == n: yield tuple(last); last=last[s:]
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r"""Move an `n`-item (default 2) windows `s` steps (default 1) at a time over `iterable`. Examples: >>> list(window(range(6),2)) [(0, 1), (1, 2), (2, 3), (3, 4), (4, 5)] >>> list(window(range(6),3)) [(0, 1, 2), (1, 2, 3), (2, 3, 4), (3, 4, 5)] >>> list(window(range(6),3, 2)) [(0, 1, 2), (2, 3, 4)] >>> list(window(range(5),3,2)) == list(window(range(6),3,2)) True
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L733-L752
train
ewiger/mlab
src/mlab/awmstools.py
group
def group(iterable, n=2, pad=__unique): r"""Iterate `n`-wise (default pairwise) over `iter`. Examples: >>> for (first, last) in group("Akira Kurosawa John Ford".split()): ... print "given name: %s surname: %s" % (first, last) ... given name: Akira surname: Kurosawa given name: John surname: Ford >>> >>> # both contain the same number of pairs >>> list(group(range(9))) == list(group(range(8))) True >>> # with n=3 >>> list(group(range(10), 3)) [(0, 1, 2), (3, 4, 5), (6, 7, 8)] >>> list(group(range(10), 3, pad=0)) [(0, 1, 2), (3, 4, 5), (6, 7, 8), (9, 0, 0)] """ assert n>0 # ensure it doesn't loop forever if pad is not __unique: it = chain(iterable, (pad,)*(n-1)) else: it = iter(iterable) perTuple = xrange(n) while True: yield tuple([it.next() for i in perTuple])
python
def group(iterable, n=2, pad=__unique): r"""Iterate `n`-wise (default pairwise) over `iter`. Examples: >>> for (first, last) in group("Akira Kurosawa John Ford".split()): ... print "given name: %s surname: %s" % (first, last) ... given name: Akira surname: Kurosawa given name: John surname: Ford >>> >>> # both contain the same number of pairs >>> list(group(range(9))) == list(group(range(8))) True >>> # with n=3 >>> list(group(range(10), 3)) [(0, 1, 2), (3, 4, 5), (6, 7, 8)] >>> list(group(range(10), 3, pad=0)) [(0, 1, 2), (3, 4, 5), (6, 7, 8), (9, 0, 0)] """ assert n>0 # ensure it doesn't loop forever if pad is not __unique: it = chain(iterable, (pad,)*(n-1)) else: it = iter(iterable) perTuple = xrange(n) while True: yield tuple([it.next() for i in perTuple])
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r"""Iterate `n`-wise (default pairwise) over `iter`. Examples: >>> for (first, last) in group("Akira Kurosawa John Ford".split()): ... print "given name: %s surname: %s" % (first, last) ... given name: Akira surname: Kurosawa given name: John surname: Ford >>> >>> # both contain the same number of pairs >>> list(group(range(9))) == list(group(range(8))) True >>> # with n=3 >>> list(group(range(10), 3)) [(0, 1, 2), (3, 4, 5), (6, 7, 8)] >>> list(group(range(10), 3, pad=0)) [(0, 1, 2), (3, 4, 5), (6, 7, 8), (9, 0, 0)]
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L756-L780
train
ewiger/mlab
src/mlab/awmstools.py
iterate
def iterate(f, n=None, last=__unique): """ >>> list(iterate(lambda x:x//2)(128)) [128, 64, 32, 16, 8, 4, 2, 1, 0] >>> list(iterate(lambda x:x//2, n=2)(128)) [128, 64] """ if n is not None: def funciter(start): for i in xrange(n): yield start; start = f(start) else: def funciter(start): while True: yield start last = f(start) if last == start: return last, start = start, last return funciter
python
def iterate(f, n=None, last=__unique): """ >>> list(iterate(lambda x:x//2)(128)) [128, 64, 32, 16, 8, 4, 2, 1, 0] >>> list(iterate(lambda x:x//2, n=2)(128)) [128, 64] """ if n is not None: def funciter(start): for i in xrange(n): yield start; start = f(start) else: def funciter(start): while True: yield start last = f(start) if last == start: return last, start = start, last return funciter
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>>> list(iterate(lambda x:x//2)(128)) [128, 64, 32, 16, 8, 4, 2, 1, 0] >>> list(iterate(lambda x:x//2, n=2)(128)) [128, 64]
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L782-L799
train
ewiger/mlab
src/mlab/awmstools.py
dropwhilenot
def dropwhilenot(func, iterable): """ >>> list(dropwhilenot(lambda x:x==3, range(10))) [3, 4, 5, 6, 7, 8, 9] """ iterable = iter(iterable) for x in iterable: if func(x): break else: return yield x for x in iterable: yield x
python
def dropwhilenot(func, iterable): """ >>> list(dropwhilenot(lambda x:x==3, range(10))) [3, 4, 5, 6, 7, 8, 9] """ iterable = iter(iterable) for x in iterable: if func(x): break else: return yield x for x in iterable: yield x
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>>> list(dropwhilenot(lambda x:x==3, range(10))) [3, 4, 5, 6, 7, 8, 9]
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L802-L813
train
ewiger/mlab
src/mlab/awmstools.py
stretch
def stretch(iterable, n=2): r"""Repeat each item in `iterable` `n` times. Example: >>> list(stretch(range(3), 2)) [0, 0, 1, 1, 2, 2] """ times = range(n) for item in iterable: for i in times: yield item
python
def stretch(iterable, n=2): r"""Repeat each item in `iterable` `n` times. Example: >>> list(stretch(range(3), 2)) [0, 0, 1, 1, 2, 2] """ times = range(n) for item in iterable: for i in times: yield item
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r"""Repeat each item in `iterable` `n` times. Example: >>> list(stretch(range(3), 2)) [0, 0, 1, 1, 2, 2]
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L816-L826
train
ewiger/mlab
src/mlab/awmstools.py
splitAt
def splitAt(iterable, indices): r"""Yield chunks of `iterable`, split at the points in `indices`: >>> [l for l in splitAt(range(10), [2,5])] [[0, 1], [2, 3, 4], [5, 6, 7, 8, 9]] splits past the length of `iterable` are ignored: >>> [l for l in splitAt(range(10), [2,5,10])] [[0, 1], [2, 3, 4], [5, 6, 7, 8, 9]] """ iterable = iter(iterable) now = 0 for to in indices: try: res = [] for i in range(now, to): res.append(iterable.next()) except StopIteration: yield res; return yield res now = to res = list(iterable) if res: yield res
python
def splitAt(iterable, indices): r"""Yield chunks of `iterable`, split at the points in `indices`: >>> [l for l in splitAt(range(10), [2,5])] [[0, 1], [2, 3, 4], [5, 6, 7, 8, 9]] splits past the length of `iterable` are ignored: >>> [l for l in splitAt(range(10), [2,5,10])] [[0, 1], [2, 3, 4], [5, 6, 7, 8, 9]] """ iterable = iter(iterable) now = 0 for to in indices: try: res = [] for i in range(now, to): res.append(iterable.next()) except StopIteration: yield res; return yield res now = to res = list(iterable) if res: yield res
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r"""Yield chunks of `iterable`, split at the points in `indices`: >>> [l for l in splitAt(range(10), [2,5])] [[0, 1], [2, 3, 4], [5, 6, 7, 8, 9]] splits past the length of `iterable` are ignored: >>> [l for l in splitAt(range(10), [2,5,10])] [[0, 1], [2, 3, 4], [5, 6, 7, 8, 9]]
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L829-L852
train
ewiger/mlab
src/mlab/awmstools.py
update
def update(d, e): """Return a copy of dict `d` updated with dict `e`.""" res = copy.copy(d) res.update(e) return res
python
def update(d, e): """Return a copy of dict `d` updated with dict `e`.""" res = copy.copy(d) res.update(e) return res
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L875-L879
train
ewiger/mlab
src/mlab/awmstools.py
invertDict
def invertDict(d, allowManyToOne=False): r"""Return an inverted version of dict `d`, so that values become keys and vice versa. If multiple keys in `d` have the same value an error is raised, unless `allowManyToOne` is true, in which case one of those key-value pairs is chosen at random for the inversion. Examples: >>> invertDict({1: 2, 3: 4}) == {2: 1, 4: 3} True >>> invertDict({1: 2, 3: 2}) Traceback (most recent call last): File "<stdin>", line 1, in ? ValueError: d can't be inverted! >>> invertDict({1: 2, 3: 2}, allowManyToOne=True).keys() [2] """ res = dict(izip(d.itervalues(), d.iterkeys())) if not allowManyToOne and len(res) != len(d): raise ValueError("d can't be inverted!") return res
python
def invertDict(d, allowManyToOne=False): r"""Return an inverted version of dict `d`, so that values become keys and vice versa. If multiple keys in `d` have the same value an error is raised, unless `allowManyToOne` is true, in which case one of those key-value pairs is chosen at random for the inversion. Examples: >>> invertDict({1: 2, 3: 4}) == {2: 1, 4: 3} True >>> invertDict({1: 2, 3: 2}) Traceback (most recent call last): File "<stdin>", line 1, in ? ValueError: d can't be inverted! >>> invertDict({1: 2, 3: 2}, allowManyToOne=True).keys() [2] """ res = dict(izip(d.itervalues(), d.iterkeys())) if not allowManyToOne and len(res) != len(d): raise ValueError("d can't be inverted!") return res
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r"""Return an inverted version of dict `d`, so that values become keys and vice versa. If multiple keys in `d` have the same value an error is raised, unless `allowManyToOne` is true, in which case one of those key-value pairs is chosen at random for the inversion. Examples: >>> invertDict({1: 2, 3: 4}) == {2: 1, 4: 3} True >>> invertDict({1: 2, 3: 2}) Traceback (most recent call last): File "<stdin>", line 1, in ? ValueError: d can't be inverted! >>> invertDict({1: 2, 3: 2}, allowManyToOne=True).keys() [2]
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L881-L901
train
ewiger/mlab
src/mlab/awmstools.py
iflatten
def iflatten(seq, isSeq=isSeq): r"""Like `flatten` but lazy.""" for elt in seq: if isSeq(elt): for x in iflatten(elt, isSeq): yield x else: yield elt
python
def iflatten(seq, isSeq=isSeq): r"""Like `flatten` but lazy.""" for elt in seq: if isSeq(elt): for x in iflatten(elt, isSeq): yield x else: yield elt
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r"""Like `flatten` but lazy.
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L907-L914
train
ewiger/mlab
src/mlab/awmstools.py
flatten
def flatten(seq, isSeq=isSeq): r"""Returns a flattened version of a sequence `seq` as a `list`. Parameters: - `seq`: The sequence to be flattened (any iterable). - `isSeq`: The function called to determine whether something is a sequence (default: `isSeq`). *Beware that this function should **never** test positive for strings, because they are no real sequences and thus cause infinite recursion.* Examples: >>> flatten([1,[2,3,(4,[5,6]),7,8]]) [1, 2, 3, 4, 5, 6, 7, 8] >>> # flaten only lists >>> flatten([1,[2,3,(4,[5,6]),7,8]], isSeq=lambda x:isinstance(x, list)) [1, 2, 3, (4, [5, 6]), 7, 8] >>> flatten([1,2]) [1, 2] >>> flatten([]) [] >>> flatten('123') ['1', '2', '3'] """ return [a for elt in seq for a in (isSeq(elt) and flatten(elt, isSeq) or [elt])]
python
def flatten(seq, isSeq=isSeq): r"""Returns a flattened version of a sequence `seq` as a `list`. Parameters: - `seq`: The sequence to be flattened (any iterable). - `isSeq`: The function called to determine whether something is a sequence (default: `isSeq`). *Beware that this function should **never** test positive for strings, because they are no real sequences and thus cause infinite recursion.* Examples: >>> flatten([1,[2,3,(4,[5,6]),7,8]]) [1, 2, 3, 4, 5, 6, 7, 8] >>> # flaten only lists >>> flatten([1,[2,3,(4,[5,6]),7,8]], isSeq=lambda x:isinstance(x, list)) [1, 2, 3, (4, [5, 6]), 7, 8] >>> flatten([1,2]) [1, 2] >>> flatten([]) [] >>> flatten('123') ['1', '2', '3'] """ return [a for elt in seq for a in (isSeq(elt) and flatten(elt, isSeq) or [elt])]
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r"""Returns a flattened version of a sequence `seq` as a `list`. Parameters: - `seq`: The sequence to be flattened (any iterable). - `isSeq`: The function called to determine whether something is a sequence (default: `isSeq`). *Beware that this function should **never** test positive for strings, because they are no real sequences and thus cause infinite recursion.* Examples: >>> flatten([1,[2,3,(4,[5,6]),7,8]]) [1, 2, 3, 4, 5, 6, 7, 8] >>> # flaten only lists >>> flatten([1,[2,3,(4,[5,6]),7,8]], isSeq=lambda x:isinstance(x, list)) [1, 2, 3, (4, [5, 6]), 7, 8] >>> flatten([1,2]) [1, 2] >>> flatten([]) [] >>> flatten('123') ['1', '2', '3']
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L929-L955
train
ewiger/mlab
src/mlab/awmstools.py
positionIf
def positionIf(pred, seq): """ >>> positionIf(lambda x: x > 3, range(10)) 4 """ for i,e in enumerate(seq): if pred(e): return i return -1
python
def positionIf(pred, seq): """ >>> positionIf(lambda x: x > 3, range(10)) 4 """ for i,e in enumerate(seq): if pred(e): return i return -1
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>>> positionIf(lambda x: x > 3, range(10)) 4
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L969-L977
train
ewiger/mlab
src/mlab/awmstools.py
union
def union(seq1=(), *seqs): r"""Return the set union of `seq1` and `seqs`, duplicates removed, order random. Examples: >>> union() [] >>> union([1,2,3]) [1, 2, 3] >>> union([1,2,3], {1:2, 5:1}) [1, 2, 3, 5] >>> union((1,2,3), ['a'], "bcd") ['a', 1, 2, 3, 'd', 'b', 'c'] >>> union([1,2,3], iter([0,1,1,1])) [0, 1, 2, 3] """ if not seqs: return list(seq1) res = set(seq1) for seq in seqs: res.update(set(seq)) return list(res)
python
def union(seq1=(), *seqs): r"""Return the set union of `seq1` and `seqs`, duplicates removed, order random. Examples: >>> union() [] >>> union([1,2,3]) [1, 2, 3] >>> union([1,2,3], {1:2, 5:1}) [1, 2, 3, 5] >>> union((1,2,3), ['a'], "bcd") ['a', 1, 2, 3, 'd', 'b', 'c'] >>> union([1,2,3], iter([0,1,1,1])) [0, 1, 2, 3] """ if not seqs: return list(seq1) res = set(seq1) for seq in seqs: res.update(set(seq)) return list(res)
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r"""Return the set union of `seq1` and `seqs`, duplicates removed, order random. Examples: >>> union() [] >>> union([1,2,3]) [1, 2, 3] >>> union([1,2,3], {1:2, 5:1}) [1, 2, 3, 5] >>> union((1,2,3), ['a'], "bcd") ['a', 1, 2, 3, 'd', 'b', 'c'] >>> union([1,2,3], iter([0,1,1,1])) [0, 1, 2, 3]
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L981-L1001
train
ewiger/mlab
src/mlab/awmstools.py
without
def without(seq1, seq2): r"""Return a list with all elements in `seq2` removed from `seq1`, order preserved. Examples: >>> without([1,2,3,1,2], [1]) [2, 3, 2] """ if isSet(seq2): d2 = seq2 else: d2 = set(seq2) return [elt for elt in seq1 if elt not in d2]
python
def without(seq1, seq2): r"""Return a list with all elements in `seq2` removed from `seq1`, order preserved. Examples: >>> without([1,2,3,1,2], [1]) [2, 3, 2] """ if isSet(seq2): d2 = seq2 else: d2 = set(seq2) return [elt for elt in seq1 if elt not in d2]
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r"""Return a list with all elements in `seq2` removed from `seq1`, order preserved. Examples: >>> without([1,2,3,1,2], [1]) [2, 3, 2]
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1011-L1022
train
ewiger/mlab
src/mlab/awmstools.py
some
def some(predicate, *seqs): """ >>> some(lambda x: x, [0, False, None]) False >>> some(lambda x: x, [None, 0, 2, 3]) 2 >>> some(operator.eq, [0,1,2], [2,1,0]) True >>> some(operator.eq, [1,2], [2,1]) False """ try: if len(seqs) == 1: return ifilter(bool,imap(predicate, seqs[0])).next() else: return ifilter(bool,starmap(predicate, izip(*seqs))).next() except StopIteration: return False
python
def some(predicate, *seqs): """ >>> some(lambda x: x, [0, False, None]) False >>> some(lambda x: x, [None, 0, 2, 3]) 2 >>> some(operator.eq, [0,1,2], [2,1,0]) True >>> some(operator.eq, [1,2], [2,1]) False """ try: if len(seqs) == 1: return ifilter(bool,imap(predicate, seqs[0])).next() else: return ifilter(bool,starmap(predicate, izip(*seqs))).next() except StopIteration: return False
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>>> some(lambda x: x, [0, False, None]) False >>> some(lambda x: x, [None, 0, 2, 3]) 2 >>> some(operator.eq, [0,1,2], [2,1,0]) True >>> some(operator.eq, [1,2], [2,1]) False
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1037-L1051
train
ewiger/mlab
src/mlab/awmstools.py
every
def every(predicate, *iterables): r"""Like `some`, but only returns `True` if all the elements of `iterables` satisfy `predicate`. Examples: >>> every(bool, []) True >>> every(bool, [0]) False >>> every(bool, [1,1]) True >>> every(operator.eq, [1,2,3],[1,2]) True >>> every(operator.eq, [1,2,3],[0,2]) False """ try: if len(iterables) == 1: ifilterfalse(predicate, iterables[0]).next() else: ifilterfalse(bool, starmap(predicate, izip(*iterables))).next() except StopIteration: return True else: return False
python
def every(predicate, *iterables): r"""Like `some`, but only returns `True` if all the elements of `iterables` satisfy `predicate`. Examples: >>> every(bool, []) True >>> every(bool, [0]) False >>> every(bool, [1,1]) True >>> every(operator.eq, [1,2,3],[1,2]) True >>> every(operator.eq, [1,2,3],[0,2]) False """ try: if len(iterables) == 1: ifilterfalse(predicate, iterables[0]).next() else: ifilterfalse(bool, starmap(predicate, izip(*iterables))).next() except StopIteration: return True else: return False
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r"""Like `some`, but only returns `True` if all the elements of `iterables` satisfy `predicate`. Examples: >>> every(bool, []) True >>> every(bool, [0]) False >>> every(bool, [1,1]) True >>> every(operator.eq, [1,2,3],[1,2]) True >>> every(operator.eq, [1,2,3],[0,2]) False
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1053-L1073
train
ewiger/mlab
src/mlab/awmstools.py
nTimes
def nTimes(n, f, *args, **kwargs): r"""Call `f` `n` times with `args` and `kwargs`. Useful e.g. for simplistic timing. Examples: >>> nTimes(3, sys.stdout.write, 'hallo\n') hallo hallo hallo """ for i in xrange(n): f(*args, **kwargs)
python
def nTimes(n, f, *args, **kwargs): r"""Call `f` `n` times with `args` and `kwargs`. Useful e.g. for simplistic timing. Examples: >>> nTimes(3, sys.stdout.write, 'hallo\n') hallo hallo hallo """ for i in xrange(n): f(*args, **kwargs)
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r"""Call `f` `n` times with `args` and `kwargs`. Useful e.g. for simplistic timing. Examples: >>> nTimes(3, sys.stdout.write, 'hallo\n') hallo hallo hallo
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1082-L1094
train
ewiger/mlab
src/mlab/awmstools.py
timeCall
def timeCall(*funcAndArgs, **kwargs): r"""Return the time (in ms) it takes to call a function (the first argument) with the remaining arguments and `kwargs`. Examples: To find out how long ``func('foo', spam=1)`` takes to execute, do: ``timeCall(func, foo, spam=1)`` """ func, args = funcAndArgs[0], funcAndArgs[1:] start = time.time() func(*args, **kwargs) return time.time() - start
python
def timeCall(*funcAndArgs, **kwargs): r"""Return the time (in ms) it takes to call a function (the first argument) with the remaining arguments and `kwargs`. Examples: To find out how long ``func('foo', spam=1)`` takes to execute, do: ``timeCall(func, foo, spam=1)`` """ func, args = funcAndArgs[0], funcAndArgs[1:] start = time.time() func(*args, **kwargs) return time.time() - start
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r"""Return the time (in ms) it takes to call a function (the first argument) with the remaining arguments and `kwargs`. Examples: To find out how long ``func('foo', spam=1)`` takes to execute, do: ``timeCall(func, foo, spam=1)``
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1097-L1111
train
ewiger/mlab
src/mlab/awmstools.py
replaceStrs
def replaceStrs(s, *args): r"""Replace all ``(frm, to)`` tuples in `args` in string `s`. >>> replaceStrs("nothing is better than warm beer", ... ('nothing','warm beer'), ('warm beer','nothing')) 'warm beer is better than nothing' """ if args == (): return s mapping = dict((frm, to) for frm, to in args) return re.sub("|".join(map(re.escape, mapping.keys())), lambda match:mapping[match.group(0)], s)
python
def replaceStrs(s, *args): r"""Replace all ``(frm, to)`` tuples in `args` in string `s`. >>> replaceStrs("nothing is better than warm beer", ... ('nothing','warm beer'), ('warm beer','nothing')) 'warm beer is better than nothing' """ if args == (): return s mapping = dict((frm, to) for frm, to in args) return re.sub("|".join(map(re.escape, mapping.keys())), lambda match:mapping[match.group(0)], s)
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r"""Replace all ``(frm, to)`` tuples in `args` in string `s`. >>> replaceStrs("nothing is better than warm beer", ... ('nothing','warm beer'), ('warm beer','nothing')) 'warm beer is better than nothing'
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1148-L1159
train
ewiger/mlab
src/mlab/awmstools.py
unescape
def unescape(s): r"""Inverse of `escape`. >>> unescape(r'\x41\n\x42\n\x43') 'A\nB\nC' >>> unescape(r'\u86c7') u'\u86c7' >>> unescape(u'ah') u'ah' """ if re.search(r'(?<!\\)\\(\\\\)*[uU]', s) or isinstance(s, unicode): return unescapeUnicode(s) else: return unescapeAscii(s)
python
def unescape(s): r"""Inverse of `escape`. >>> unescape(r'\x41\n\x42\n\x43') 'A\nB\nC' >>> unescape(r'\u86c7') u'\u86c7' >>> unescape(u'ah') u'ah' """ if re.search(r'(?<!\\)\\(\\\\)*[uU]', s) or isinstance(s, unicode): return unescapeUnicode(s) else: return unescapeAscii(s)
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r"""Inverse of `escape`. >>> unescape(r'\x41\n\x42\n\x43') 'A\nB\nC' >>> unescape(r'\u86c7') u'\u86c7' >>> unescape(u'ah') u'ah'
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1178-L1190
train
ewiger/mlab
src/mlab/awmstools.py
lineAndColumnAt
def lineAndColumnAt(s, pos): r"""Return line and column of `pos` (0-based!) in `s`. Lines start with 1, columns with 0. Examples: >>> lineAndColumnAt("0123\n56", 5) (2, 0) >>> lineAndColumnAt("0123\n56", 6) (2, 1) >>> lineAndColumnAt("0123\n56", 0) (1, 0) """ if pos >= len(s): raise IndexError("`pos` %d not in string" % pos) # *don't* count last '\n', if it is at pos! line = s.count('\n',0,pos) if line: return line + 1, pos - s.rfind('\n',0,pos) - 1 else: return 1, pos
python
def lineAndColumnAt(s, pos): r"""Return line and column of `pos` (0-based!) in `s`. Lines start with 1, columns with 0. Examples: >>> lineAndColumnAt("0123\n56", 5) (2, 0) >>> lineAndColumnAt("0123\n56", 6) (2, 1) >>> lineAndColumnAt("0123\n56", 0) (1, 0) """ if pos >= len(s): raise IndexError("`pos` %d not in string" % pos) # *don't* count last '\n', if it is at pos! line = s.count('\n',0,pos) if line: return line + 1, pos - s.rfind('\n',0,pos) - 1 else: return 1, pos
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r"""Return line and column of `pos` (0-based!) in `s`. Lines start with 1, columns with 0. Examples: >>> lineAndColumnAt("0123\n56", 5) (2, 0) >>> lineAndColumnAt("0123\n56", 6) (2, 1) >>> lineAndColumnAt("0123\n56", 0) (1, 0)
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1198-L1218
train
ewiger/mlab
src/mlab/awmstools.py
prin
def prin(*args, **kwargs): r"""Like ``print``, but a function. I.e. prints out all arguments as ``print`` would do. Specify output stream like this:: print('ERROR', `out="sys.stderr"``). """ print >> kwargs.get('out',None), " ".join([str(arg) for arg in args])
python
def prin(*args, **kwargs): r"""Like ``print``, but a function. I.e. prints out all arguments as ``print`` would do. Specify output stream like this:: print('ERROR', `out="sys.stderr"``). """ print >> kwargs.get('out',None), " ".join([str(arg) for arg in args])
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r"""Like ``print``, but a function. I.e. prints out all arguments as ``print`` would do. Specify output stream like this:: print('ERROR', `out="sys.stderr"``).
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1222-L1229
train
ewiger/mlab
src/mlab/awmstools.py
fitString
def fitString(s, maxCol=79, newlineReplacement=None): r"""Truncate `s` if necessary to fit into a line of width `maxCol` (default: 79), also replacing newlines with `newlineReplacement` (default `None`: in which case everything after the first newline is simply discarded). Examples: >>> fitString('12345', maxCol=5) '12345' >>> fitString('123456', maxCol=5) '12...' >>> fitString('a line\na second line') 'a line' >>> fitString('a line\na second line', newlineReplacement='\\n') 'a line\\na second line' """ assert isString(s) if '\n' in s: if newlineReplacement is None: s = s[:s.index('\n')] else: s = s.replace("\n", newlineReplacement) if maxCol is not None and len(s) > maxCol: s = "%s..." % s[:maxCol-3] return s
python
def fitString(s, maxCol=79, newlineReplacement=None): r"""Truncate `s` if necessary to fit into a line of width `maxCol` (default: 79), also replacing newlines with `newlineReplacement` (default `None`: in which case everything after the first newline is simply discarded). Examples: >>> fitString('12345', maxCol=5) '12345' >>> fitString('123456', maxCol=5) '12...' >>> fitString('a line\na second line') 'a line' >>> fitString('a line\na second line', newlineReplacement='\\n') 'a line\\na second line' """ assert isString(s) if '\n' in s: if newlineReplacement is None: s = s[:s.index('\n')] else: s = s.replace("\n", newlineReplacement) if maxCol is not None and len(s) > maxCol: s = "%s..." % s[:maxCol-3] return s
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r"""Truncate `s` if necessary to fit into a line of width `maxCol` (default: 79), also replacing newlines with `newlineReplacement` (default `None`: in which case everything after the first newline is simply discarded). Examples: >>> fitString('12345', maxCol=5) '12345' >>> fitString('123456', maxCol=5) '12...' >>> fitString('a line\na second line') 'a line' >>> fitString('a line\na second line', newlineReplacement='\\n') 'a line\\na second line'
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1249-L1274
train
ewiger/mlab
src/mlab/awmstools.py
saveVars
def saveVars(filename, varNamesStr, outOf=None, **opts): r"""Pickle name and value of all those variables in `outOf` (default: all global variables (as seen from the caller)) that are named in `varNamesStr` into a file called `filename` (if no extension is given, '.bpickle' is appended). Overwrites file without asking, unless you specify `overwrite=0`. Load again with `loadVars`. Thus, to save the global variables ``bar``, ``foo`` and ``baz`` in the file 'savedVars' do:: saveVars('savedVars', 'bar foo baz') """ filename, varnames, outOf = __saveVarsHelper( filename, varNamesStr, outOf, **opts) print "pickling:\n", "\n".join(sorted(varnames)) try: f = None f = open(filename, "wb") cPickle.dump(dict(zip(varnames, atIndices(outOf, varnames))), f, 1) # UGH: cPickle, unlike pickle doesn't accept bin=1 finally: if f: f.close()
python
def saveVars(filename, varNamesStr, outOf=None, **opts): r"""Pickle name and value of all those variables in `outOf` (default: all global variables (as seen from the caller)) that are named in `varNamesStr` into a file called `filename` (if no extension is given, '.bpickle' is appended). Overwrites file without asking, unless you specify `overwrite=0`. Load again with `loadVars`. Thus, to save the global variables ``bar``, ``foo`` and ``baz`` in the file 'savedVars' do:: saveVars('savedVars', 'bar foo baz') """ filename, varnames, outOf = __saveVarsHelper( filename, varNamesStr, outOf, **opts) print "pickling:\n", "\n".join(sorted(varnames)) try: f = None f = open(filename, "wb") cPickle.dump(dict(zip(varnames, atIndices(outOf, varnames))), f, 1) # UGH: cPickle, unlike pickle doesn't accept bin=1 finally: if f: f.close()
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r"""Pickle name and value of all those variables in `outOf` (default: all global variables (as seen from the caller)) that are named in `varNamesStr` into a file called `filename` (if no extension is given, '.bpickle' is appended). Overwrites file without asking, unless you specify `overwrite=0`. Load again with `loadVars`. Thus, to save the global variables ``bar``, ``foo`` and ``baz`` in the file 'savedVars' do:: saveVars('savedVars', 'bar foo baz')
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1305-L1328
train
ewiger/mlab
src/mlab/awmstools.py
addVars
def addVars(filename, varNamesStr, outOf=None): r"""Like `saveVars`, but appends additional variables to file.""" filename, varnames, outOf = __saveVarsHelper(filename, varNamesStr, outOf) f = None try: f = open(filename, "rb") h = cPickle.load(f) f.close() h.update(dict(zip(varnames, atIndices(outOf, varnames)))) f = open(filename, "wb") cPickle.dump( h, f , 1 ) finally: if f: f.close()
python
def addVars(filename, varNamesStr, outOf=None): r"""Like `saveVars`, but appends additional variables to file.""" filename, varnames, outOf = __saveVarsHelper(filename, varNamesStr, outOf) f = None try: f = open(filename, "rb") h = cPickle.load(f) f.close() h.update(dict(zip(varnames, atIndices(outOf, varnames)))) f = open(filename, "wb") cPickle.dump( h, f , 1 ) finally: if f: f.close()
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r"""Like `saveVars`, but appends additional variables to file.
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1336-L1349
train
ewiger/mlab
src/mlab/awmstools.py
loadDict
def loadDict(filename): """Return the variables pickled pickled into `filename` with `saveVars` as a dict.""" filename = os.path.expanduser(filename) if not splitext(filename)[1]: filename += ".bpickle" f = None try: f = open(filename, "rb") varH = cPickle.load(f) finally: if f: f.close() return varH
python
def loadDict(filename): """Return the variables pickled pickled into `filename` with `saveVars` as a dict.""" filename = os.path.expanduser(filename) if not splitext(filename)[1]: filename += ".bpickle" f = None try: f = open(filename, "rb") varH = cPickle.load(f) finally: if f: f.close() return varH
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Return the variables pickled pickled into `filename` with `saveVars` as a dict.
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1351-L1362
train
ewiger/mlab
src/mlab/awmstools.py
loadVars
def loadVars(filename, ask=True, into=None, only=None): r"""Load variables pickled with `saveVars`. Parameters: - `ask`: If `True` then don't overwrite existing variables without asking. - `only`: A list to limit the variables to or `None`. - `into`: The dictionary the variables should be loaded into (defaults to global dictionary). """ filename = os.path.expanduser(filename) if into is None: into = magicGlobals() varH = loadDict(filename) toUnpickle = only or varH.keys() alreadyDefined = filter(into.has_key, toUnpickle) if alreadyDefined and ask: print "The following vars already exist; overwrite (yes/NO)?\n",\ "\n".join(alreadyDefined) if raw_input() != "yes": toUnpickle = without(toUnpickle, alreadyDefined) if not toUnpickle: print "nothing to unpickle" return None print "unpickling:\n",\ "\n".join(sorted(toUnpickle)) for k in varH.keys(): if k not in toUnpickle: del varH[k] into.update(varH)
python
def loadVars(filename, ask=True, into=None, only=None): r"""Load variables pickled with `saveVars`. Parameters: - `ask`: If `True` then don't overwrite existing variables without asking. - `only`: A list to limit the variables to or `None`. - `into`: The dictionary the variables should be loaded into (defaults to global dictionary). """ filename = os.path.expanduser(filename) if into is None: into = magicGlobals() varH = loadDict(filename) toUnpickle = only or varH.keys() alreadyDefined = filter(into.has_key, toUnpickle) if alreadyDefined and ask: print "The following vars already exist; overwrite (yes/NO)?\n",\ "\n".join(alreadyDefined) if raw_input() != "yes": toUnpickle = without(toUnpickle, alreadyDefined) if not toUnpickle: print "nothing to unpickle" return None print "unpickling:\n",\ "\n".join(sorted(toUnpickle)) for k in varH.keys(): if k not in toUnpickle: del varH[k] into.update(varH)
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r"""Load variables pickled with `saveVars`. Parameters: - `ask`: If `True` then don't overwrite existing variables without asking. - `only`: A list to limit the variables to or `None`. - `into`: The dictionary the variables should be loaded into (defaults to global dictionary).
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1364-L1393
train
ewiger/mlab
src/mlab/awmstools.py
runInfo
def runInfo(prog=None,vers=None,date=None,user=None,dir=None,args=None): r"""Create a short info string detailing how a program was invoked. This is meant to be added to a history comment field of a data file were it is important to keep track of what programs modified it and how. !!!:`args` should be a **``list``** not a ``str``.""" return "%(prog)s %(vers)s;" \ " run %(date)s by %(usr)s in %(dir)s with: %(args)s'n" % \ mkDict(prog=prog or sys.argv[0], vers=vers or magicGlobals().get("__version__", ""), date=date or isoDateTimeStr(), usr=user or getpass.getuser(), dir=dir or os.getcwd(), args=" ".join(args or sys.argv))
python
def runInfo(prog=None,vers=None,date=None,user=None,dir=None,args=None): r"""Create a short info string detailing how a program was invoked. This is meant to be added to a history comment field of a data file were it is important to keep track of what programs modified it and how. !!!:`args` should be a **``list``** not a ``str``.""" return "%(prog)s %(vers)s;" \ " run %(date)s by %(usr)s in %(dir)s with: %(args)s'n" % \ mkDict(prog=prog or sys.argv[0], vers=vers or magicGlobals().get("__version__", ""), date=date or isoDateTimeStr(), usr=user or getpass.getuser(), dir=dir or os.getcwd(), args=" ".join(args or sys.argv))
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r"""Create a short info string detailing how a program was invoked. This is meant to be added to a history comment field of a data file were it is important to keep track of what programs modified it and how. !!!:`args` should be a **``list``** not a ``str``.
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1401-L1415
train
ewiger/mlab
src/mlab/awmstools.py
makePrintReturner
def makePrintReturner(pre="", post="" ,out=None): r"""Creates functions that print out their argument, (between optional `pre` and `post` strings) and return it unmodified. This is usefull for debugging e.g. parts of expressions, without having to modify the behavior of the program. Example: >>> makePrintReturner(pre="The value is:", post="[returning]")(3) The value is: 3 [returning] 3 >>> """ def printReturner(arg): myArgs = [pre, arg, post] prin(*myArgs, **{'out':out}) return arg return printReturner
python
def makePrintReturner(pre="", post="" ,out=None): r"""Creates functions that print out their argument, (between optional `pre` and `post` strings) and return it unmodified. This is usefull for debugging e.g. parts of expressions, without having to modify the behavior of the program. Example: >>> makePrintReturner(pre="The value is:", post="[returning]")(3) The value is: 3 [returning] 3 >>> """ def printReturner(arg): myArgs = [pre, arg, post] prin(*myArgs, **{'out':out}) return arg return printReturner
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r"""Creates functions that print out their argument, (between optional `pre` and `post` strings) and return it unmodified. This is usefull for debugging e.g. parts of expressions, without having to modify the behavior of the program. Example: >>> makePrintReturner(pre="The value is:", post="[returning]")(3) The value is: 3 [returning] 3 >>>
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1543-L1560
train
ewiger/mlab
src/mlab/awmstools.py
asVerboseContainer
def asVerboseContainer(cont, onGet=None, onSet=None, onDel=None): """Returns a 'verbose' version of container instance `cont`, that will execute `onGet`, `onSet` and `onDel` (if not `None`) every time __getitem__, __setitem__ and __delitem__ are called, passing `self`, `key` (and `value` in the case of set). E.g: >>> l = [1,2,3] >>> l = asVerboseContainer(l, ... onGet=lambda s,k:k==2 and prin('Got two:', k), ... onSet=lambda s,k,v:k == v and prin('k == v:', k, v), ... onDel=lambda s,k:k == 1 and prin('Deleting one:', k)) >>> l [1, 2, 3] >>> l[1] 2 >>> l[2] Got two: 2 3 >>> l[2] = 22 >>> l[2] = 2 k == v: 2 2 >>> del l[2] >>> del l[1] Deleting one: 1 """ class VerboseContainer(type(cont)): if onGet: def __getitem__(self, key): onGet(self, key) return super(VerboseContainer, self).__getitem__(key) if onSet: def __setitem__(self, key, value): onSet(self, key, value) return super(VerboseContainer, self).__setitem__(key, value) if onDel: def __delitem__(self, key): onDel(self, key) return super(VerboseContainer, self).__delitem__(key) return VerboseContainer(cont)
python
def asVerboseContainer(cont, onGet=None, onSet=None, onDel=None): """Returns a 'verbose' version of container instance `cont`, that will execute `onGet`, `onSet` and `onDel` (if not `None`) every time __getitem__, __setitem__ and __delitem__ are called, passing `self`, `key` (and `value` in the case of set). E.g: >>> l = [1,2,3] >>> l = asVerboseContainer(l, ... onGet=lambda s,k:k==2 and prin('Got two:', k), ... onSet=lambda s,k,v:k == v and prin('k == v:', k, v), ... onDel=lambda s,k:k == 1 and prin('Deleting one:', k)) >>> l [1, 2, 3] >>> l[1] 2 >>> l[2] Got two: 2 3 >>> l[2] = 22 >>> l[2] = 2 k == v: 2 2 >>> del l[2] >>> del l[1] Deleting one: 1 """ class VerboseContainer(type(cont)): if onGet: def __getitem__(self, key): onGet(self, key) return super(VerboseContainer, self).__getitem__(key) if onSet: def __setitem__(self, key, value): onSet(self, key, value) return super(VerboseContainer, self).__setitem__(key, value) if onDel: def __delitem__(self, key): onDel(self, key) return super(VerboseContainer, self).__delitem__(key) return VerboseContainer(cont)
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Returns a 'verbose' version of container instance `cont`, that will execute `onGet`, `onSet` and `onDel` (if not `None`) every time __getitem__, __setitem__ and __delitem__ are called, passing `self`, `key` (and `value` in the case of set). E.g: >>> l = [1,2,3] >>> l = asVerboseContainer(l, ... onGet=lambda s,k:k==2 and prin('Got two:', k), ... onSet=lambda s,k,v:k == v and prin('k == v:', k, v), ... onDel=lambda s,k:k == 1 and prin('Deleting one:', k)) >>> l [1, 2, 3] >>> l[1] 2 >>> l[2] Got two: 2 3 >>> l[2] = 22 >>> l[2] = 2 k == v: 2 2 >>> del l[2] >>> del l[1] Deleting one: 1
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1599-L1638
train
ewiger/mlab
src/mlab/awmstools.py
mkRepr
def mkRepr(instance, *argls, **kwargs): r"""Convinience function to implement ``__repr__``. `kwargs` values are ``repr`` ed. Special behavior for ``instance=None``: just the arguments are formatted. Example: >>> class Thing: ... def __init__(self, color, shape, taste=None): ... self.color, self.shape, self.taste = color, shape, taste ... def __repr__(self): ... return mkRepr(self, self.color, self.shape, taste=self.taste) ... >>> maggot = Thing('white', 'cylindrical', 'chicken') >>> maggot Thing('white', 'cylindrical', taste='chicken') >>> Thing('Color # 132942430-214809804-412430988081-241234', 'unkown', taste=maggot) Thing('Color # 132942430-214809804-412430988081-241234', 'unkown', taste=Thing('white', 'cylindrical', taste='chicken')) """ width=79 maxIndent=15 minIndent=2 args = (map(repr, argls) + ["%s=%r" % (k, v) for (k,v) in sorted(kwargs.items())]) or [""] if instance is not None: start = "%s(" % instance.__class__.__name__ args[-1] += ")" else: start = "" if len(start) <= maxIndent and len(start) + len(args[0]) <= width and \ max(map(len,args)) <= width: # XXX mag of last condition bit arbitrary indent = len(start) args[0] = start + args[0] if sum(map(len, args)) + 2*(len(args) - 1) <= width: return ", ".join(args) else: indent = minIndent args[0] = start + "\n" + " " * indent + args[0] return (",\n" + " " * indent).join(args)
python
def mkRepr(instance, *argls, **kwargs): r"""Convinience function to implement ``__repr__``. `kwargs` values are ``repr`` ed. Special behavior for ``instance=None``: just the arguments are formatted. Example: >>> class Thing: ... def __init__(self, color, shape, taste=None): ... self.color, self.shape, self.taste = color, shape, taste ... def __repr__(self): ... return mkRepr(self, self.color, self.shape, taste=self.taste) ... >>> maggot = Thing('white', 'cylindrical', 'chicken') >>> maggot Thing('white', 'cylindrical', taste='chicken') >>> Thing('Color # 132942430-214809804-412430988081-241234', 'unkown', taste=maggot) Thing('Color # 132942430-214809804-412430988081-241234', 'unkown', taste=Thing('white', 'cylindrical', taste='chicken')) """ width=79 maxIndent=15 minIndent=2 args = (map(repr, argls) + ["%s=%r" % (k, v) for (k,v) in sorted(kwargs.items())]) or [""] if instance is not None: start = "%s(" % instance.__class__.__name__ args[-1] += ")" else: start = "" if len(start) <= maxIndent and len(start) + len(args[0]) <= width and \ max(map(len,args)) <= width: # XXX mag of last condition bit arbitrary indent = len(start) args[0] = start + args[0] if sum(map(len, args)) + 2*(len(args) - 1) <= width: return ", ".join(args) else: indent = minIndent args[0] = start + "\n" + " " * indent + args[0] return (",\n" + " " * indent).join(args)
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r"""Convinience function to implement ``__repr__``. `kwargs` values are ``repr`` ed. Special behavior for ``instance=None``: just the arguments are formatted. Example: >>> class Thing: ... def __init__(self, color, shape, taste=None): ... self.color, self.shape, self.taste = color, shape, taste ... def __repr__(self): ... return mkRepr(self, self.color, self.shape, taste=self.taste) ... >>> maggot = Thing('white', 'cylindrical', 'chicken') >>> maggot Thing('white', 'cylindrical', taste='chicken') >>> Thing('Color # 132942430-214809804-412430988081-241234', 'unkown', taste=maggot) Thing('Color # 132942430-214809804-412430988081-241234', 'unkown', taste=Thing('white', 'cylindrical', taste='chicken'))
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1724-L1764
train
ewiger/mlab
src/mlab/awmstools.py
d2attrs
def d2attrs(*args, **kwargs): """Utility function to remove ``**kwargs`` parsing boiler-plate in ``__init__``: >>> kwargs = dict(name='Bill', age=51, income=1e7) >>> self = ezstruct(); d2attrs(kwargs, self, 'income', 'name'); self ezstruct(income=10000000.0, name='Bill') >>> self = ezstruct(); d2attrs(kwargs, self, 'income', age=0, bloodType='A'); self ezstruct(age=51, bloodType='A', income=10000000.0) To set all keys from ``kwargs`` use: >>> self = ezstruct(); d2attrs(kwargs, self, 'all!'); self ezstruct(age=51, income=10000000.0, name='Bill') """ (d, self), args = args[:2], args[2:] if args[0] == 'all!': assert len(args) == 1 for k in d: setattr(self, k, d[k]) else: if len(args) != len(set(args)) or set(kwargs) & set(args): raise ValueError('Duplicate keys: %s' % list(notUnique(args)) + list(set(kwargs) & set(args))) for k in args: if k in kwargs: raise ValueError('%s specified twice' % k) setattr(self, k, d[k]) for dk in kwargs: setattr(self, dk, d.get(dk, kwargs[dk]))
python
def d2attrs(*args, **kwargs): """Utility function to remove ``**kwargs`` parsing boiler-plate in ``__init__``: >>> kwargs = dict(name='Bill', age=51, income=1e7) >>> self = ezstruct(); d2attrs(kwargs, self, 'income', 'name'); self ezstruct(income=10000000.0, name='Bill') >>> self = ezstruct(); d2attrs(kwargs, self, 'income', age=0, bloodType='A'); self ezstruct(age=51, bloodType='A', income=10000000.0) To set all keys from ``kwargs`` use: >>> self = ezstruct(); d2attrs(kwargs, self, 'all!'); self ezstruct(age=51, income=10000000.0, name='Bill') """ (d, self), args = args[:2], args[2:] if args[0] == 'all!': assert len(args) == 1 for k in d: setattr(self, k, d[k]) else: if len(args) != len(set(args)) or set(kwargs) & set(args): raise ValueError('Duplicate keys: %s' % list(notUnique(args)) + list(set(kwargs) & set(args))) for k in args: if k in kwargs: raise ValueError('%s specified twice' % k) setattr(self, k, d[k]) for dk in kwargs: setattr(self, dk, d.get(dk, kwargs[dk]))
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Utility function to remove ``**kwargs`` parsing boiler-plate in ``__init__``: >>> kwargs = dict(name='Bill', age=51, income=1e7) >>> self = ezstruct(); d2attrs(kwargs, self, 'income', 'name'); self ezstruct(income=10000000.0, name='Bill') >>> self = ezstruct(); d2attrs(kwargs, self, 'income', age=0, bloodType='A'); self ezstruct(age=51, bloodType='A', income=10000000.0) To set all keys from ``kwargs`` use: >>> self = ezstruct(); d2attrs(kwargs, self, 'all!'); self ezstruct(age=51, income=10000000.0, name='Bill')
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1787-L1814
train
ewiger/mlab
src/mlab/awmstools.py
pairwise
def pairwise(fun, v): """ >>> pairwise(operator.sub, [4,3,2,1,-10]) [1, 1, 1, 11] >>> import numpy >>> pairwise(numpy.subtract, numpy.array([4,3,2,1,-10])) array([ 1, 1, 1, 11]) """ if not hasattr(v, 'shape'): return list(ipairwise(fun,v)) else: return fun(v[:-1],v[1:])
python
def pairwise(fun, v): """ >>> pairwise(operator.sub, [4,3,2,1,-10]) [1, 1, 1, 11] >>> import numpy >>> pairwise(numpy.subtract, numpy.array([4,3,2,1,-10])) array([ 1, 1, 1, 11]) """ if not hasattr(v, 'shape'): return list(ipairwise(fun,v)) else: return fun(v[:-1],v[1:])
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>>> pairwise(operator.sub, [4,3,2,1,-10]) [1, 1, 1, 11] >>> import numpy >>> pairwise(numpy.subtract, numpy.array([4,3,2,1,-10])) array([ 1, 1, 1, 11])
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1819-L1830
train
ewiger/mlab
src/mlab/awmstools.py
argmax
def argmax(iterable, key=None, both=False): """ >>> argmax([4,2,-5]) 0 >>> argmax([4,2,-5], key=abs) 2 >>> argmax([4,2,-5], key=abs, both=True) (2, 5) """ if key is not None: it = imap(key, iterable) else: it = iter(iterable) score, argmax = reduce(max, izip(it, count())) if both: return argmax, score return argmax
python
def argmax(iterable, key=None, both=False): """ >>> argmax([4,2,-5]) 0 >>> argmax([4,2,-5], key=abs) 2 >>> argmax([4,2,-5], key=abs, both=True) (2, 5) """ if key is not None: it = imap(key, iterable) else: it = iter(iterable) score, argmax = reduce(max, izip(it, count())) if both: return argmax, score return argmax
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>>> argmax([4,2,-5]) 0 >>> argmax([4,2,-5], key=abs) 2 >>> argmax([4,2,-5], key=abs, both=True) (2, 5)
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1846-L1862
train
ewiger/mlab
src/mlab/awmstools.py
argmin
def argmin(iterable, key=None, both=False): """See `argmax`. """ if key is not None: it = imap(key, iterable) else: it = iter(iterable) score, argmin = reduce(min, izip(it, count())) if both: return argmin, score return argmin
python
def argmin(iterable, key=None, both=False): """See `argmax`. """ if key is not None: it = imap(key, iterable) else: it = iter(iterable) score, argmin = reduce(min, izip(it, count())) if both: return argmin, score return argmin
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See `argmax`.
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1864-L1874
train
ewiger/mlab
src/mlab/awmstools.py
isInt
def isInt(num): """Returns true if `num` is (sort of) an integer. >>> isInt(3) == isInt(3.0) == 1 True >>> isInt(3.2) False >>> import numpy >>> isInt(numpy.array(1)) True >>> isInt(numpy.array([1])) False """ try: len(num) # FIXME fails for Numeric but Numeric is obsolete except: try: return (num - math.floor(num) == 0) == True except: return False else: return False
python
def isInt(num): """Returns true if `num` is (sort of) an integer. >>> isInt(3) == isInt(3.0) == 1 True >>> isInt(3.2) False >>> import numpy >>> isInt(numpy.array(1)) True >>> isInt(numpy.array([1])) False """ try: len(num) # FIXME fails for Numeric but Numeric is obsolete except: try: return (num - math.floor(num) == 0) == True except: return False else: return False
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Returns true if `num` is (sort of) an integer. >>> isInt(3) == isInt(3.0) == 1 True >>> isInt(3.2) False >>> import numpy >>> isInt(numpy.array(1)) True >>> isInt(numpy.array([1])) False
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1881-L1899
train
ewiger/mlab
src/mlab/awmstools.py
mapConcat
def mapConcat(func, *iterables): """Similar to `map` but the instead of collecting the return values of `func` in a list, the items of each return value are instaed collected (so `func` must return an iterable type). Examples: >>> mapConcat(lambda x:[x], [1,2,3]) [1, 2, 3] >>> mapConcat(lambda x: [x,str(x)], [1,2,3]) [1, '1', 2, '2', 3, '3'] """ return [e for l in imap(func, *iterables) for e in l]
python
def mapConcat(func, *iterables): """Similar to `map` but the instead of collecting the return values of `func` in a list, the items of each return value are instaed collected (so `func` must return an iterable type). Examples: >>> mapConcat(lambda x:[x], [1,2,3]) [1, 2, 3] >>> mapConcat(lambda x: [x,str(x)], [1,2,3]) [1, '1', 2, '2', 3, '3'] """ return [e for l in imap(func, *iterables) for e in l]
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Similar to `map` but the instead of collecting the return values of `func` in a list, the items of each return value are instaed collected (so `func` must return an iterable type). Examples: >>> mapConcat(lambda x:[x], [1,2,3]) [1, 2, 3] >>> mapConcat(lambda x: [x,str(x)], [1,2,3]) [1, '1', 2, '2', 3, '3']
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1917-L1929
train
ewiger/mlab
src/mlab/awmstools.py
unfold
def unfold(seed, by, last = __unique): """ >>> list(unfold(1234, lambda x: divmod(x,10)))[::-1] [1, 2, 3, 4] >>> sum(imap(operator.mul,unfold(1234, lambda x:divmod(x,10)), iterate(lambda x:x*10)(1))) 1234 >>> g = unfold(1234, lambda x:divmod(x,10)) >>> reduce((lambda (total,pow),digit:(total+pow*digit, 10*pow)), g, (0,1)) (1234, 10000) """ while True: seed, val = by(seed); if last == seed: return last = seed; yield val
python
def unfold(seed, by, last = __unique): """ >>> list(unfold(1234, lambda x: divmod(x,10)))[::-1] [1, 2, 3, 4] >>> sum(imap(operator.mul,unfold(1234, lambda x:divmod(x,10)), iterate(lambda x:x*10)(1))) 1234 >>> g = unfold(1234, lambda x:divmod(x,10)) >>> reduce((lambda (total,pow),digit:(total+pow*digit, 10*pow)), g, (0,1)) (1234, 10000) """ while True: seed, val = by(seed); if last == seed: return last = seed; yield val
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>>> list(unfold(1234, lambda x: divmod(x,10)))[::-1] [1, 2, 3, 4] >>> sum(imap(operator.mul,unfold(1234, lambda x:divmod(x,10)), iterate(lambda x:x*10)(1))) 1234 >>> g = unfold(1234, lambda x:divmod(x,10)) >>> reduce((lambda (total,pow),digit:(total+pow*digit, 10*pow)), g, (0,1)) (1234, 10000)
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1935-L1949
train
ewiger/mlab
src/mlab/awmstools.py
reduceR
def reduceR(f, sequence, initial=__unique): """*R*ight reduce. >>> reduceR(lambda x,y:x/y, [1.,2.,3.,4]) == 1./(2./(3./4.)) == (1./2.)*(3./4.) True >>> reduceR(lambda x,y:x-y, iter([1,2,3]),4) == 1-(2-(3-4)) == (1-2)+(3-4) True """ try: rev = reversed(sequence) except TypeError: rev = reversed(list(sequence)) if initial is __unique: return reduce(lambda x,y:f(y,x), rev) else: return reduce(lambda x,y:f(y,x), rev, initial)
python
def reduceR(f, sequence, initial=__unique): """*R*ight reduce. >>> reduceR(lambda x,y:x/y, [1.,2.,3.,4]) == 1./(2./(3./4.)) == (1./2.)*(3./4.) True >>> reduceR(lambda x,y:x-y, iter([1,2,3]),4) == 1-(2-(3-4)) == (1-2)+(3-4) True """ try: rev = reversed(sequence) except TypeError: rev = reversed(list(sequence)) if initial is __unique: return reduce(lambda x,y:f(y,x), rev) else: return reduce(lambda x,y:f(y,x), rev, initial)
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*R*ight reduce. >>> reduceR(lambda x,y:x/y, [1.,2.,3.,4]) == 1./(2./(3./4.)) == (1./2.)*(3./4.) True >>> reduceR(lambda x,y:x-y, iter([1,2,3]),4) == 1-(2-(3-4)) == (1-2)+(3-4) True
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1951-L1961
train
ewiger/mlab
src/mlab/awmstools.py
compose
def compose(*funcs): """Compose `funcs` to a single function. >>> compose(operator.abs, operator.add)(-2,-3) 5 >>> compose()('nada') 'nada' >>> compose(sorted, set, partial(filter, None))(range(3)[::-1]*2) [1, 2] """ # slightly optimized for most common cases and hence verbose if len(funcs) == 2: f0,f1=funcs; return lambda *a,**kw: f0(f1(*a,**kw)) elif len(funcs) == 3: f0,f1,f2=funcs; return lambda *a,**kw: f0(f1(f2(*a,**kw))) elif len(funcs) == 0: return lambda x:x # XXX single kwarg elif len(funcs) == 1: return funcs[0] else: def composed(*args,**kwargs): y = funcs[-1](*args,**kwargs) for f in funcs[:0:-1]: y = f(y) return y return composed
python
def compose(*funcs): """Compose `funcs` to a single function. >>> compose(operator.abs, operator.add)(-2,-3) 5 >>> compose()('nada') 'nada' >>> compose(sorted, set, partial(filter, None))(range(3)[::-1]*2) [1, 2] """ # slightly optimized for most common cases and hence verbose if len(funcs) == 2: f0,f1=funcs; return lambda *a,**kw: f0(f1(*a,**kw)) elif len(funcs) == 3: f0,f1,f2=funcs; return lambda *a,**kw: f0(f1(f2(*a,**kw))) elif len(funcs) == 0: return lambda x:x # XXX single kwarg elif len(funcs) == 1: return funcs[0] else: def composed(*args,**kwargs): y = funcs[-1](*args,**kwargs) for f in funcs[:0:-1]: y = f(y) return y return composed
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Compose `funcs` to a single function. >>> compose(operator.abs, operator.add)(-2,-3) 5 >>> compose()('nada') 'nada' >>> compose(sorted, set, partial(filter, None))(range(3)[::-1]*2) [1, 2]
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1964-L1984
train
ewiger/mlab
src/mlab/awmstools.py
romanNumeral
def romanNumeral(n): """ >>> romanNumeral(13) 'XIII' >>> romanNumeral(2944) 'MMCMXLIV' """ if 0 > n > 4000: raise ValueError('``n`` must lie between 1 and 3999: %d' % n) roman = 'I IV V IX X XL L XC C CD D CM M'.split() arabic = [1, 4, 5, 9, 10, 40, 50, 90, 100, 400, 500, 900, 1000] res = [] while n>0: pos = bisect.bisect_right(arabic, n)-1 fit = n//arabic[pos] res.append(roman[pos]*fit); n -= fit * arabic[pos] return "".join(res)
python
def romanNumeral(n): """ >>> romanNumeral(13) 'XIII' >>> romanNumeral(2944) 'MMCMXLIV' """ if 0 > n > 4000: raise ValueError('``n`` must lie between 1 and 3999: %d' % n) roman = 'I IV V IX X XL L XC C CD D CM M'.split() arabic = [1, 4, 5, 9, 10, 40, 50, 90, 100, 400, 500, 900, 1000] res = [] while n>0: pos = bisect.bisect_right(arabic, n)-1 fit = n//arabic[pos] res.append(roman[pos]*fit); n -= fit * arabic[pos] return "".join(res)
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>>> romanNumeral(13) 'XIII' >>> romanNumeral(2944) 'MMCMXLIV'
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1987-L2002
train
ewiger/mlab
src/mlab/awmstools.py
first
def first(n, it, constructor=list): """ >>> first(3,iter([1,2,3,4])) [1, 2, 3] >>> first(3,iter([1,2,3,4]), iter) #doctest: +ELLIPSIS <itertools.islice object at ...> >>> first(3,iter([1,2,3,4]), tuple) (1, 2, 3) """ return constructor(itertools.islice(it,n))
python
def first(n, it, constructor=list): """ >>> first(3,iter([1,2,3,4])) [1, 2, 3] >>> first(3,iter([1,2,3,4]), iter) #doctest: +ELLIPSIS <itertools.islice object at ...> >>> first(3,iter([1,2,3,4]), tuple) (1, 2, 3) """ return constructor(itertools.islice(it,n))
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>>> first(3,iter([1,2,3,4])) [1, 2, 3] >>> first(3,iter([1,2,3,4]), iter) #doctest: +ELLIPSIS <itertools.islice object at ...> >>> first(3,iter([1,2,3,4]), tuple) (1, 2, 3)
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L2011-L2020
train
ewiger/mlab
src/mlab/awmstools.py
drop
def drop(n, it, constructor=list): """ >>> first(10,drop(10,xrange(sys.maxint),iter)) [10, 11, 12, 13, 14, 15, 16, 17, 18, 19] """ return constructor(itertools.islice(it,n,None))
python
def drop(n, it, constructor=list): """ >>> first(10,drop(10,xrange(sys.maxint),iter)) [10, 11, 12, 13, 14, 15, 16, 17, 18, 19] """ return constructor(itertools.islice(it,n,None))
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>>> first(10,drop(10,xrange(sys.maxint),iter)) [10, 11, 12, 13, 14, 15, 16, 17, 18, 19]
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L2021-L2026
train
ewiger/mlab
src/mlab/awmstools.py
DryRun.run
def run(self, func, *args, **kwargs): """Same as ``self.dryRun`` if ``self.dry``, else same as ``self.wetRun``.""" if self.dry: return self.dryRun(func, *args, **kwargs) else: return self.wetRun(func, *args, **kwargs)
python
def run(self, func, *args, **kwargs): """Same as ``self.dryRun`` if ``self.dry``, else same as ``self.wetRun``.""" if self.dry: return self.dryRun(func, *args, **kwargs) else: return self.wetRun(func, *args, **kwargs)
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Same as ``self.dryRun`` if ``self.dry``, else same as ``self.wetRun``.
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1516-L1521
train
ewiger/mlab
src/mlab/awmstools.py
DryRun.dryRun
def dryRun(self, func, *args, **kwargs): """Instead of running function with `*args` and `**kwargs`, just print out the function call.""" print >> self.out, \ self.formatterDict.get(func, self.defaultFormatter)(func, *args, **kwargs)
python
def dryRun(self, func, *args, **kwargs): """Instead of running function with `*args` and `**kwargs`, just print out the function call.""" print >> self.out, \ self.formatterDict.get(func, self.defaultFormatter)(func, *args, **kwargs)
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Instead of running function with `*args` and `**kwargs`, just print out the function call.
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72a98adf6499f548848ad44c604f74d68f07fe4f
https://github.com/ewiger/mlab/blob/72a98adf6499f548848ad44c604f74d68f07fe4f/src/mlab/awmstools.py#L1528-L1533
train
rlisagor/pynetlinux
pynetlinux/brctl.py
iterbridges
def iterbridges(): ''' Iterate over all the bridges in the system. ''' net_files = os.listdir(SYSFS_NET_PATH) for d in net_files: path = os.path.join(SYSFS_NET_PATH, d) if not os.path.isdir(path): continue if os.path.exists(os.path.join(path, b"bridge")): yield Bridge(d)
python
def iterbridges(): ''' Iterate over all the bridges in the system. ''' net_files = os.listdir(SYSFS_NET_PATH) for d in net_files: path = os.path.join(SYSFS_NET_PATH, d) if not os.path.isdir(path): continue if os.path.exists(os.path.join(path, b"bridge")): yield Bridge(d)
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Iterate over all the bridges in the system.
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e3f16978855c6649685f0c43d4c3fcf768427ae5
https://github.com/rlisagor/pynetlinux/blob/e3f16978855c6649685f0c43d4c3fcf768427ae5/pynetlinux/brctl.py#L97-L105
train
rlisagor/pynetlinux
pynetlinux/brctl.py
addbr
def addbr(name): ''' Create new bridge with the given name ''' fcntl.ioctl(ifconfig.sockfd, SIOCBRADDBR, name) return Bridge(name)
python
def addbr(name): ''' Create new bridge with the given name ''' fcntl.ioctl(ifconfig.sockfd, SIOCBRADDBR, name) return Bridge(name)
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Create new bridge with the given name
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e3f16978855c6649685f0c43d4c3fcf768427ae5
https://github.com/rlisagor/pynetlinux/blob/e3f16978855c6649685f0c43d4c3fcf768427ae5/pynetlinux/brctl.py#L113-L116
train
rlisagor/pynetlinux
pynetlinux/brctl.py
Bridge.iterifs
def iterifs(self): ''' Iterate over all the interfaces in this bridge. ''' if_path = os.path.join(SYSFS_NET_PATH, self.name, b"brif") net_files = os.listdir(if_path) for iface in net_files: yield iface
python
def iterifs(self): ''' Iterate over all the interfaces in this bridge. ''' if_path = os.path.join(SYSFS_NET_PATH, self.name, b"brif") net_files = os.listdir(if_path) for iface in net_files: yield iface
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Iterate over all the interfaces in this bridge.
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e3f16978855c6649685f0c43d4c3fcf768427ae5
https://github.com/rlisagor/pynetlinux/blob/e3f16978855c6649685f0c43d4c3fcf768427ae5/pynetlinux/brctl.py#L32-L37
train
rlisagor/pynetlinux
pynetlinux/brctl.py
Bridge.addif
def addif(self, iface): ''' Add the interface with the given name to this bridge. Equivalent to brctl addif [bridge] [interface]. ''' if type(iface) == ifconfig.Interface: devindex = iface.index else: devindex = ifconfig.Interface(iface).index ifreq = struct.pack('16si', self.name, devindex) fcntl.ioctl(ifconfig.sockfd, SIOCBRADDIF, ifreq) return self
python
def addif(self, iface): ''' Add the interface with the given name to this bridge. Equivalent to brctl addif [bridge] [interface]. ''' if type(iface) == ifconfig.Interface: devindex = iface.index else: devindex = ifconfig.Interface(iface).index ifreq = struct.pack('16si', self.name, devindex) fcntl.ioctl(ifconfig.sockfd, SIOCBRADDIF, ifreq) return self
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Add the interface with the given name to this bridge. Equivalent to brctl addif [bridge] [interface].
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e3f16978855c6649685f0c43d4c3fcf768427ae5
https://github.com/rlisagor/pynetlinux/blob/e3f16978855c6649685f0c43d4c3fcf768427ae5/pynetlinux/brctl.py#L45-L54
train
rlisagor/pynetlinux
pynetlinux/brctl.py
Bridge.delif
def delif(self, iface): ''' Remove the interface with the given name from this bridge. Equivalent to brctl delif [bridge] [interface]''' if type(iface) == ifconfig.Interface: devindex = iface.index else: devindex = ifconfig.Interface(iface).index ifreq = struct.pack('16si', self.name, devindex) fcntl.ioctl(ifconfig.sockfd, SIOCBRDELIF, ifreq) return self
python
def delif(self, iface): ''' Remove the interface with the given name from this bridge. Equivalent to brctl delif [bridge] [interface]''' if type(iface) == ifconfig.Interface: devindex = iface.index else: devindex = ifconfig.Interface(iface).index ifreq = struct.pack('16si', self.name, devindex) fcntl.ioctl(ifconfig.sockfd, SIOCBRDELIF, ifreq) return self
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Remove the interface with the given name from this bridge. Equivalent to brctl delif [bridge] [interface]
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e3f16978855c6649685f0c43d4c3fcf768427ae5
https://github.com/rlisagor/pynetlinux/blob/e3f16978855c6649685f0c43d4c3fcf768427ae5/pynetlinux/brctl.py#L57-L66
train
rlisagor/pynetlinux
pynetlinux/brctl.py
Bridge.delete
def delete(self): ''' Brings down the bridge interface, and removes it. Equivalent to ifconfig [bridge] down && brctl delbr [bridge]. ''' self.down() fcntl.ioctl(ifconfig.sockfd, SIOCBRDELBR, self.name) return self
python
def delete(self): ''' Brings down the bridge interface, and removes it. Equivalent to ifconfig [bridge] down && brctl delbr [bridge]. ''' self.down() fcntl.ioctl(ifconfig.sockfd, SIOCBRDELBR, self.name) return self
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Brings down the bridge interface, and removes it. Equivalent to ifconfig [bridge] down && brctl delbr [bridge].
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e3f16978855c6649685f0c43d4c3fcf768427ae5
https://github.com/rlisagor/pynetlinux/blob/e3f16978855c6649685f0c43d4c3fcf768427ae5/pynetlinux/brctl.py#L76-L81
train
jluttine/d3py
d3py/core.py
_get_random_id
def _get_random_id(): """ Get a random (i.e., unique) string identifier""" symbols = string.ascii_uppercase + string.ascii_lowercase + string.digits return ''.join(random.choice(symbols) for _ in range(15))
python
def _get_random_id(): """ Get a random (i.e., unique) string identifier""" symbols = string.ascii_uppercase + string.ascii_lowercase + string.digits return ''.join(random.choice(symbols) for _ in range(15))
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Get a random (i.e., unique) string identifier
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2856eb3aa23c4ae17897fcd6a25b68203eb1e9e0
https://github.com/jluttine/d3py/blob/2856eb3aa23c4ae17897fcd6a25b68203eb1e9e0/d3py/core.py#L16-L19
train
jluttine/d3py
d3py/core.py
get_lib_filename
def get_lib_filename(category, name): """ Get a filename of a built-in library file. """ base_dir = os.path.dirname(os.path.abspath(__file__)) if category == 'js': filename = os.path.join('js', '{0}.js'.format(name)) elif category == 'css': filename = os.path.join('css', '{0}.css'.format(name)) elif category == 'html': filename = os.path.join('html', '{0}.html'.format(name)) else: raise ValueError("Unknown category") return os.path.join(base_dir, 'lib', filename)
python
def get_lib_filename(category, name): """ Get a filename of a built-in library file. """ base_dir = os.path.dirname(os.path.abspath(__file__)) if category == 'js': filename = os.path.join('js', '{0}.js'.format(name)) elif category == 'css': filename = os.path.join('css', '{0}.css'.format(name)) elif category == 'html': filename = os.path.join('html', '{0}.html'.format(name)) else: raise ValueError("Unknown category") return os.path.join(base_dir, 'lib', filename)
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Get a filename of a built-in library file.
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2856eb3aa23c4ae17897fcd6a25b68203eb1e9e0
https://github.com/jluttine/d3py/blob/2856eb3aa23c4ae17897fcd6a25b68203eb1e9e0/d3py/core.py#L29-L40
train
jluttine/d3py
d3py/core.py
output_notebook
def output_notebook( d3js_url="//d3js.org/d3.v3.min", requirejs_url="//cdnjs.cloudflare.com/ajax/libs/require.js/2.1.10/require.min.js", html_template=None ): """ Import required Javascript libraries to Jupyter Notebook. """ if html_template is None: html_template = read_lib('html', 'setup') setup_html = populate_template( html_template, d3js=d3js_url, requirejs=requirejs_url ) display_html(setup_html) return
python
def output_notebook( d3js_url="//d3js.org/d3.v3.min", requirejs_url="//cdnjs.cloudflare.com/ajax/libs/require.js/2.1.10/require.min.js", html_template=None ): """ Import required Javascript libraries to Jupyter Notebook. """ if html_template is None: html_template = read_lib('html', 'setup') setup_html = populate_template( html_template, d3js=d3js_url, requirejs=requirejs_url ) display_html(setup_html) return
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Import required Javascript libraries to Jupyter Notebook.
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2856eb3aa23c4ae17897fcd6a25b68203eb1e9e0
https://github.com/jluttine/d3py/blob/2856eb3aa23c4ae17897fcd6a25b68203eb1e9e0/d3py/core.py#L59-L76
train
jluttine/d3py
d3py/core.py
create_graph_html
def create_graph_html(js_template, css_template, html_template=None): """ Create HTML code block given the graph Javascript and CSS. """ if html_template is None: html_template = read_lib('html', 'graph') # Create div ID for the graph and give it to the JS and CSS templates so # they can reference the graph. graph_id = 'graph-{0}'.format(_get_random_id()) js = populate_template(js_template, graph_id=graph_id) css = populate_template(css_template, graph_id=graph_id) return populate_template( html_template, graph_id=graph_id, css=css, js=js )
python
def create_graph_html(js_template, css_template, html_template=None): """ Create HTML code block given the graph Javascript and CSS. """ if html_template is None: html_template = read_lib('html', 'graph') # Create div ID for the graph and give it to the JS and CSS templates so # they can reference the graph. graph_id = 'graph-{0}'.format(_get_random_id()) js = populate_template(js_template, graph_id=graph_id) css = populate_template(css_template, graph_id=graph_id) return populate_template( html_template, graph_id=graph_id, css=css, js=js )
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Create HTML code block given the graph Javascript and CSS.
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2856eb3aa23c4ae17897fcd6a25b68203eb1e9e0
https://github.com/jluttine/d3py/blob/2856eb3aa23c4ae17897fcd6a25b68203eb1e9e0/d3py/core.py#L79-L95
train
viraja1/grammar-check
download_lt.py
get_newest_possible_languagetool_version
def get_newest_possible_languagetool_version(): """Return newest compatible version. >>> version = get_newest_possible_languagetool_version() >>> version in [JAVA_6_COMPATIBLE_VERSION, LATEST_VERSION] True """ java_path = find_executable('java') if not java_path: # Just ignore this and assume an old version of Java. It might not be # found because of a PATHEXT-related issue # (https://bugs.python.org/issue2200). return JAVA_6_COMPATIBLE_VERSION output = subprocess.check_output([java_path, '-version'], stderr=subprocess.STDOUT, universal_newlines=True) # https://www.oracle.com/technetwork/java/javase/versioning-naming-139433.html match = re.search( r'^java version "(?P<major1>\d+)\.(?P<major2>\d+)\.[^"]+"$', output, re.MULTILINE) if not match: raise SystemExit( 'Could not parse Java version from """{}""".'.format(output)) java_version = (int(match.group('major1')), int(match.group('major2'))) if java_version >= (1, 7): return LATEST_VERSION elif java_version >= (1, 6): warn('grammar-check would be able to use a newer version of ' 'LanguageTool if you had Java 7 or newer installed') return JAVA_6_COMPATIBLE_VERSION else: raise SystemExit( 'You need at least Java 6 to use grammar-check')
python
def get_newest_possible_languagetool_version(): """Return newest compatible version. >>> version = get_newest_possible_languagetool_version() >>> version in [JAVA_6_COMPATIBLE_VERSION, LATEST_VERSION] True """ java_path = find_executable('java') if not java_path: # Just ignore this and assume an old version of Java. It might not be # found because of a PATHEXT-related issue # (https://bugs.python.org/issue2200). return JAVA_6_COMPATIBLE_VERSION output = subprocess.check_output([java_path, '-version'], stderr=subprocess.STDOUT, universal_newlines=True) # https://www.oracle.com/technetwork/java/javase/versioning-naming-139433.html match = re.search( r'^java version "(?P<major1>\d+)\.(?P<major2>\d+)\.[^"]+"$', output, re.MULTILINE) if not match: raise SystemExit( 'Could not parse Java version from """{}""".'.format(output)) java_version = (int(match.group('major1')), int(match.group('major2'))) if java_version >= (1, 7): return LATEST_VERSION elif java_version >= (1, 6): warn('grammar-check would be able to use a newer version of ' 'LanguageTool if you had Java 7 or newer installed') return JAVA_6_COMPATIBLE_VERSION else: raise SystemExit( 'You need at least Java 6 to use grammar-check')
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Return newest compatible version. >>> version = get_newest_possible_languagetool_version() >>> version in [JAVA_6_COMPATIBLE_VERSION, LATEST_VERSION] True
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103bf27119b85b4ef26c8f8d4089b6c882cabe5c
https://github.com/viraja1/grammar-check/blob/103bf27119b85b4ef26c8f8d4089b6c882cabe5c/download_lt.py#L33-L69
train
rlisagor/pynetlinux
pynetlinux/ifconfig.py
iterifs
def iterifs(physical=True): ''' Iterate over all the interfaces in the system. If physical is true, then return only real physical interfaces (not 'lo', etc).''' net_files = os.listdir(SYSFS_NET_PATH) interfaces = set() virtual = set() for d in net_files: path = os.path.join(SYSFS_NET_PATH, d) if not os.path.isdir(path): continue if not os.path.exists(os.path.join(path, b"device")): virtual.add(d) interfaces.add(d) # Some virtual interfaces don't show up in the above search, for example, # subinterfaces (e.g. eth0:1). To find those, we have to do an ioctl if not physical: # ifconfig gets a max of 30 interfaces. Good enough for us too. ifreqs = array.array("B", b"\x00" * SIZE_OF_IFREQ * 30) buf_addr, _buf_len = ifreqs.buffer_info() ifconf = struct.pack("iP", SIZE_OF_IFREQ * 30, buf_addr) ifconf_res = fcntl.ioctl(sockfd, SIOCGIFCONF, ifconf) ifreqs_len, _ = struct.unpack("iP", ifconf_res) assert ifreqs_len % SIZE_OF_IFREQ == 0, ( "Unexpected amount of data returned from ioctl. " "You're probably running on an unexpected architecture") res = ifreqs.tostring() for i in range(0, ifreqs_len, SIZE_OF_IFREQ): d = res[i:i+16].strip(b'\0') interfaces.add(d) results = interfaces - virtual if physical else interfaces for d in results: yield Interface(d)
python
def iterifs(physical=True): ''' Iterate over all the interfaces in the system. If physical is true, then return only real physical interfaces (not 'lo', etc).''' net_files = os.listdir(SYSFS_NET_PATH) interfaces = set() virtual = set() for d in net_files: path = os.path.join(SYSFS_NET_PATH, d) if not os.path.isdir(path): continue if not os.path.exists(os.path.join(path, b"device")): virtual.add(d) interfaces.add(d) # Some virtual interfaces don't show up in the above search, for example, # subinterfaces (e.g. eth0:1). To find those, we have to do an ioctl if not physical: # ifconfig gets a max of 30 interfaces. Good enough for us too. ifreqs = array.array("B", b"\x00" * SIZE_OF_IFREQ * 30) buf_addr, _buf_len = ifreqs.buffer_info() ifconf = struct.pack("iP", SIZE_OF_IFREQ * 30, buf_addr) ifconf_res = fcntl.ioctl(sockfd, SIOCGIFCONF, ifconf) ifreqs_len, _ = struct.unpack("iP", ifconf_res) assert ifreqs_len % SIZE_OF_IFREQ == 0, ( "Unexpected amount of data returned from ioctl. " "You're probably running on an unexpected architecture") res = ifreqs.tostring() for i in range(0, ifreqs_len, SIZE_OF_IFREQ): d = res[i:i+16].strip(b'\0') interfaces.add(d) results = interfaces - virtual if physical else interfaces for d in results: yield Interface(d)
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Iterate over all the interfaces in the system. If physical is true, then return only real physical interfaces (not 'lo', etc).
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e3f16978855c6649685f0c43d4c3fcf768427ae5
https://github.com/rlisagor/pynetlinux/blob/e3f16978855c6649685f0c43d4c3fcf768427ae5/pynetlinux/ifconfig.py#L353-L388
train
rlisagor/pynetlinux
pynetlinux/ifconfig.py
init
def init(): ''' Initialize the library ''' globals()["sock"] = socket.socket(socket.AF_INET, socket.SOCK_STREAM) globals()["sockfd"] = globals()["sock"].fileno()
python
def init(): ''' Initialize the library ''' globals()["sock"] = socket.socket(socket.AF_INET, socket.SOCK_STREAM) globals()["sockfd"] = globals()["sock"].fileno()
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Initialize the library
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e3f16978855c6649685f0c43d4c3fcf768427ae5
https://github.com/rlisagor/pynetlinux/blob/e3f16978855c6649685f0c43d4c3fcf768427ae5/pynetlinux/ifconfig.py#L403-L406
train
rlisagor/pynetlinux
pynetlinux/ifconfig.py
Interface.up
def up(self): ''' Bring up the bridge interface. Equivalent to ifconfig [iface] up. ''' # Get existing device flags ifreq = struct.pack('16sh', self.name, 0) flags = struct.unpack('16sh', fcntl.ioctl(sockfd, SIOCGIFFLAGS, ifreq))[1] # Set new flags flags = flags | IFF_UP ifreq = struct.pack('16sh', self.name, flags) fcntl.ioctl(sockfd, SIOCSIFFLAGS, ifreq)
python
def up(self): ''' Bring up the bridge interface. Equivalent to ifconfig [iface] up. ''' # Get existing device flags ifreq = struct.pack('16sh', self.name, 0) flags = struct.unpack('16sh', fcntl.ioctl(sockfd, SIOCGIFFLAGS, ifreq))[1] # Set new flags flags = flags | IFF_UP ifreq = struct.pack('16sh', self.name, flags) fcntl.ioctl(sockfd, SIOCSIFFLAGS, ifreq)
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Bring up the bridge interface. Equivalent to ifconfig [iface] up.
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e3f16978855c6649685f0c43d4c3fcf768427ae5
https://github.com/rlisagor/pynetlinux/blob/e3f16978855c6649685f0c43d4c3fcf768427ae5/pynetlinux/ifconfig.py#L142-L152
train
rlisagor/pynetlinux
pynetlinux/ifconfig.py
Interface.is_up
def is_up(self): ''' Return True if the interface is up, False otherwise. ''' # Get existing device flags ifreq = struct.pack('16sh', self.name, 0) flags = struct.unpack('16sh', fcntl.ioctl(sockfd, SIOCGIFFLAGS, ifreq))[1] # Set new flags if flags & IFF_UP: return True else: return False
python
def is_up(self): ''' Return True if the interface is up, False otherwise. ''' # Get existing device flags ifreq = struct.pack('16sh', self.name, 0) flags = struct.unpack('16sh', fcntl.ioctl(sockfd, SIOCGIFFLAGS, ifreq))[1] # Set new flags if flags & IFF_UP: return True else: return False
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Return True if the interface is up, False otherwise.
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e3f16978855c6649685f0c43d4c3fcf768427ae5
https://github.com/rlisagor/pynetlinux/blob/e3f16978855c6649685f0c43d4c3fcf768427ae5/pynetlinux/ifconfig.py#L166-L177
train
rlisagor/pynetlinux
pynetlinux/ifconfig.py
Interface.get_mac
def get_mac(self): ''' Obtain the device's mac address. ''' ifreq = struct.pack('16sH14s', self.name, AF_UNIX, b'\x00'*14) res = fcntl.ioctl(sockfd, SIOCGIFHWADDR, ifreq) address = struct.unpack('16sH14s', res)[2] mac = struct.unpack('6B8x', address) return ":".join(['%02X' % i for i in mac])
python
def get_mac(self): ''' Obtain the device's mac address. ''' ifreq = struct.pack('16sH14s', self.name, AF_UNIX, b'\x00'*14) res = fcntl.ioctl(sockfd, SIOCGIFHWADDR, ifreq) address = struct.unpack('16sH14s', res)[2] mac = struct.unpack('6B8x', address) return ":".join(['%02X' % i for i in mac])
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Obtain the device's mac address.
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e3f16978855c6649685f0c43d4c3fcf768427ae5
https://github.com/rlisagor/pynetlinux/blob/e3f16978855c6649685f0c43d4c3fcf768427ae5/pynetlinux/ifconfig.py#L179-L186
train
rlisagor/pynetlinux
pynetlinux/ifconfig.py
Interface.set_mac
def set_mac(self, newmac): ''' Set the device's mac address. Device must be down for this to succeed. ''' macbytes = [int(i, 16) for i in newmac.split(':')] ifreq = struct.pack('16sH6B8x', self.name, AF_UNIX, *macbytes) fcntl.ioctl(sockfd, SIOCSIFHWADDR, ifreq)
python
def set_mac(self, newmac): ''' Set the device's mac address. Device must be down for this to succeed. ''' macbytes = [int(i, 16) for i in newmac.split(':')] ifreq = struct.pack('16sH6B8x', self.name, AF_UNIX, *macbytes) fcntl.ioctl(sockfd, SIOCSIFHWADDR, ifreq)
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Set the device's mac address. Device must be down for this to succeed.
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e3f16978855c6649685f0c43d4c3fcf768427ae5
https://github.com/rlisagor/pynetlinux/blob/e3f16978855c6649685f0c43d4c3fcf768427ae5/pynetlinux/ifconfig.py#L189-L194
train