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def convert_to_this_nbformat(nb, orig_version=2, orig_minor=0): """Convert a notebook to the v3 format. Parameters ---------- nb : NotebookNode The Python representation of the notebook to convert. orig_version : int The original version of the notebook to convert. orig_minor : ...
def hex_to_rgb(color): """Convert a hex color to rgb integer tuple.""" if color.startswith('#'): color = color[1:] if len(color) == 3: color = ''.join([c*2 for c in color]) if len(color) != 6: return False try: r = int(color[:2],16) g = int(color[2:4],16) ...
def get_colors(stylename): """Construct the keys to be used building the base stylesheet from a templatee.""" style = get_style_by_name(stylename) fgcolor = style.style_for_token(Token.Text)['color'] or '' if len(fgcolor) in (3,6): # could be 'abcdef' or 'ace' hex, which needs '#' prefix ...
def sheet_from_template(name, colors='lightbg'): """Use one of the base templates, and set bg/fg/select colors.""" colors = colors.lower() if colors=='lightbg': return default_light_style_template%get_colors(name) elif colors=='linux': return default_dark_style_template%get_colors(name) ...
def get_font(family, fallback=None): """Return a font of the requested family, using fallback as alternative. If a fallback is provided, it is used in case the requested family isn't found. If no fallback is given, no alternative is chosen and Qt's internal algorithms may automatically choose a fallba...
def _handle_complete_reply(self, rep): """ Reimplemented to support IPython's improved completion machinery. """ self.log.debug("complete: %s", rep.get('content', '')) cursor = self._get_cursor() info = self._request_info.get('complete') if info and info.id == rep['parent...
def _handle_execute_reply(self, msg): """ Reimplemented to support prompt requests. """ msg_id = msg['parent_header'].get('msg_id') info = self._request_info['execute'].get(msg_id) if info and info.kind == 'prompt': number = msg['content']['execution_count'] + 1 ...
def _handle_history_reply(self, msg): """ Implemented to handle history tail replies, which are only supported by the IPython kernel. """ content = msg['content'] if 'history' not in content: self.log.error("History request failed: %r"%content) if cont...
def _handle_pyout(self, msg): """ Reimplemented for IPython-style "display hook". """ self.log.debug("pyout: %s", msg.get('content', '')) if not self._hidden and self._is_from_this_session(msg): content = msg['content'] prompt_number = content.get('execution_count...
def _handle_display_data(self, msg): """ The base handler for the ``display_data`` message. """ self.log.debug("display: %s", msg.get('content', '')) # For now, we don't display data from other frontends, but we # eventually will as this allows all frontends to monitor the displa...
def _started_channels(self): """Reimplemented to make a history request and load %guiref.""" super(IPythonWidget, self)._started_channels() self._load_guiref_magic() self.kernel_manager.shell_channel.history(hist_access_type='tail', n=100...
def execute_file(self, path, hidden=False): """ Reimplemented to use the 'run' magic. """ # Use forward slashes on Windows to avoid escaping each separator. if sys.platform == 'win32': path = os.path.normpath(path).replace('\\', '/') # Perhaps we should not be using ...
def _complete(self): """ Reimplemented to support IPython's improved completion machinery. """ # We let the kernel split the input line, so we *always* send an empty # text field. Readline-based frontends do get a real text field which # they can use. text = '' #...
def _process_execute_error(self, msg): """ Reimplemented for IPython-style traceback formatting. """ content = msg['content'] traceback = '\n'.join(content['traceback']) + '\n' if False: # FIXME: For now, tracebacks come as plain text, so we can't use # th...
def _process_execute_payload(self, item): """ Reimplemented to dispatch payloads to handler methods. """ handler = self._payload_handlers.get(item['source']) if handler is None: # We have no handler for this type of payload, simply ignore it return False e...
def _show_interpreter_prompt(self, number=None): """ Reimplemented for IPython-style prompts. """ # If a number was not specified, make a prompt number request. if number is None: msg_id = self.kernel_manager.shell_channel.execute('', silent=True) info = self._Exe...
def _show_interpreter_prompt_for_reply(self, msg): """ Reimplemented for IPython-style prompts. """ # Update the old prompt number if necessary. content = msg['content'] # abort replies do not have any keys: if content['status'] == 'aborted': if self._previous...
def set_default_style(self, colors='lightbg'): """ Sets the widget style to the class defaults. Parameters: ----------- colors : str, optional (default lightbg) Whether to use the default IPython light background or dark background or B&W style. """ ...
def _edit(self, filename, line=None): """ Opens a Python script for editing. Parameters: ----------- filename : str A path to a local system file. line : int, optional A line of interest in the file. """ if self.custom_edit: s...
def _make_in_prompt(self, number): """ Given a prompt number, returns an HTML In prompt. """ try: body = self.in_prompt % number except TypeError: # allow in_prompt to leave out number, e.g. '>>> ' body = self.in_prompt return '<span class="in-...
def _make_continuation_prompt(self, prompt): """ Given a plain text version of an In prompt, returns an HTML continuation prompt. """ end_chars = '...: ' space_count = len(prompt.lstrip('\n')) - len(end_chars) body = '&nbsp;' * space_count + end_chars return '...
def _style_sheet_changed(self): """ Set the style sheets of the underlying widgets. """ self.setStyleSheet(self.style_sheet) if self._control is not None: self._control.document().setDefaultStyleSheet(self.style_sheet) bg_color = self._control.palette().window().c...
def _syntax_style_changed(self): """ Set the style for the syntax highlighter. """ if self._highlighter is None: # ignore premature calls return if self.syntax_style: self._highlighter.set_style(self.syntax_style) else: self._highli...
async def request(self, command: str, **kwargs) -> dict: """ Async co-routine to perform requests to a CloudStackAPI. The parameters needs to include the command string, which refers to the API to be called. In principle any available and future CloudStack API can be called. The `**kwarg...
async def _handle_response(self, response: aiohttp.client_reqrep.ClientResponse, await_final_result: bool) -> dict: """ Handles the response returned from the CloudStack API. Some CloudStack API are implemented asynchronous, which means that the API call returns just a job id. The actually expec...
def _sign(self, url_parameters: dict) -> dict: """ According to the CloudStack documentation, each request needs to be signed in order to authenticate the user account executing the API command. The signature is generated using a combination of the api secret and a SHA-1 hash of the url ...
def _transform_data(data: dict) -> dict: """ Each CloudStack API call returns a nested dictionary structure. The first level contains only one key indicating the API that originated the response. This function removes that first level from the data returned to the caller. :param...
def virtual_memory(): """System virtual memory as a namedutple.""" mem = _psutil_bsd.get_virtual_mem() total, free, active, inactive, wired, cached, buffers, shared = mem avail = inactive + cached + free used = active + wired + cached percent = usage_percent((total - avail), total, _round=1) ...
def swap_memory(): """System swap memory as (total, used, free, sin, sout) namedtuple.""" total, used, free, sin, sout = \ [x * _PAGESIZE for x in _psutil_bsd.get_swap_mem()] percent = usage_percent(used, total, _round=1) return nt_swapmeminfo(total, used, free, percent, sin, sout)
def get_system_cpu_times(): """Return system per-CPU times as a named tuple""" user, nice, system, idle, irq = _psutil_bsd.get_system_cpu_times() return _cputimes_ntuple(user, nice, system, idle, irq)
def get_system_per_cpu_times(): """Return system CPU times as a named tuple""" ret = [] for cpu_t in _psutil_bsd.get_system_per_cpu_times(): user, nice, system, idle, irq = cpu_t item = _cputimes_ntuple(user, nice, system, idle, irq) ret.append(item) return ret
def get_process_uids(self): """Return real, effective and saved user ids.""" real, effective, saved = _psutil_bsd.get_process_uids(self.pid) return nt_uids(real, effective, saved)
def get_process_gids(self): """Return real, effective and saved group ids.""" real, effective, saved = _psutil_bsd.get_process_gids(self.pid) return nt_gids(real, effective, saved)
def get_cpu_times(self): """return a tuple containing process user/kernel time.""" user, system = _psutil_bsd.get_process_cpu_times(self.pid) return nt_cputimes(user, system)
def get_memory_info(self): """Return a tuple with the process' RSS and VMS size.""" rss, vms = _psutil_bsd.get_process_memory_info(self.pid)[:2] return nt_meminfo(rss, vms)
def get_process_threads(self): """Return the number of threads belonging to the process.""" rawlist = _psutil_bsd.get_process_threads(self.pid) retlist = [] for thread_id, utime, stime in rawlist: ntuple = nt_thread(thread_id, utime, stime) retlist.append(ntuple) ...
def get_open_files(self): """Return files opened by process as a list of namedtuples.""" # XXX - C implementation available on FreeBSD >= 8 only # else fallback on lsof parser if hasattr(_psutil_bsd, "get_process_open_files"): rawlist = _psutil_bsd.get_process_open_files(self...
def get_connection_file(app=None): """Return the path to the connection file of an app Parameters ---------- app : KernelApp instance [optional] If unspecified, the currently running app will be used """ if app is None: from IPython.zmq.ipkernel import IPKernelApp if...
def find_connection_file(filename, profile=None): """find a connection file, and return its absolute path. The current working directory and the profile's security directory will be searched for the file if it is not given by absolute path. If profile is unspecified, then the current runni...
def get_connection_info(connection_file=None, unpack=False, profile=None): """Return the connection information for the current Kernel. Parameters ---------- connection_file : str [optional] The connection file to be used. Can be given by absolute path, or IPython will search in the...
def connect_qtconsole(connection_file=None, argv=None, profile=None): """Connect a qtconsole to the current kernel. This is useful for connecting a second qtconsole to a kernel, or to a local notebook. Parameters ---------- connection_file : str [optional] The connection file t...
def tunnel_to_kernel(connection_info, sshserver, sshkey=None): """tunnel connections to a kernel via ssh This will open four SSH tunnels from localhost on this machine to the ports associated with the kernel. They can be either direct localhost-localhost tunnels, or if an intermediate server is ne...
def swallow_argv(argv, aliases=None, flags=None): """strip frontend-specific aliases and flags from an argument list For use primarily in frontend apps that want to pass a subset of command-line arguments through to a subprocess, where frontend-specific flags and aliases should be removed from the ...
def pkg_commit_hash(pkg_path): """Get short form of commit hash given directory `pkg_path` We get the commit hash from (in order of preference): * IPython.utils._sysinfo.commit * git output, if we are in a git repository If these fail, we return a not-found placeholder tuple Parameters -...
def pkg_info(pkg_path): """Return dict describing the context of this package Parameters ---------- pkg_path : str path containing __init__.py for package Returns ------- context : dict with named parameters of interest """ src, hsh = pkg_commit_hash(pkg_path) ret...
def sys_info(): """Return useful information about IPython and the system, as a string. Example ------- In [2]: print sys_info() {'commit_hash': '144fdae', # random 'commit_source': 'repository', 'ipython_path': '/home/fperez/usr/lib/python2.6/site-packages/IPython', 'ipython_ve...
def _num_cpus_darwin(): """Return the number of active CPUs on a Darwin system.""" p = subprocess.Popen(['sysctl','-n','hw.ncpu'],stdout=subprocess.PIPE) return p.stdout.read()
def num_cpus(): """Return the effective number of CPUs in the system as an integer. This cross-platform function makes an attempt at finding the total number of available CPUs in the system, as returned by various underlying system and python calls. If it can't find a sensible answer, it returns 1 (tho...
def handle(self, integers, **options): """ [1, 2, 3, 4] {'accumulate': <built-in function max>} """ print integers, options return super(Command, self).handle(integers, **options)
def nextset(self): """Advance to the next result set. Returns None if there are no more result sets. """ if self._executed: self.fetchall() del self.messages[:] db = self._get_db() nr = db.next_result() if nr == -1: return...
def execute(self, query, args=None): """Execute a query. query -- string, query to execute on server args -- optional sequence or mapping, parameters to use with query. Note: If args is a sequence, then %s must be used as the parameter placeholder in the query. If a ma...
def executemany(self, query, args): """Execute a multi-row query. query -- string, query to execute on server args Sequence of sequences or mappings, parameters to use with query. Returns long integer rows affected, if any. ...
def callproc(self, procname, args=()): """Execute stored procedure procname with args procname -- string, name of procedure to execute on server args -- Sequence of parameters to use with procedure Returns the original args. Compatibility warning: PEP-249 specifies t...
def fetchone(self): """Fetches a single row from the cursor.""" self._check_executed() r = self._fetch_row(1) if not r: self._warning_check() return None self.rownumber = self.rownumber + 1 return r[0]
def fetchmany(self, size=None): """Fetch up to size rows from the cursor. Result set may be smaller than size. If size is not defined, cursor.arraysize is used.""" self._check_executed() r = self._fetch_row(size or self.arraysize) self.rownumber = self.rownumber + len(r) ...
def fetchall(self): """Fetchs all available rows from the cursor.""" self._check_executed() r = self._fetch_row(0) self.rownumber = self.rownumber + len(r) self._warning_check() return r
def fetchmanyDict(self, size=None): """Fetch several rows as a list of dictionaries. Deprecated: Use fetchmany() instead. Will be removed in 1.3.""" from warnings import warn warn("fetchmanyDict() is non-standard and will be removed in 1.3", DeprecationWarning, 2) re...
def connect(com, peers, tree, pub_url, root_id): """this function will be called on the engines""" com.connect(peers, tree, pub_url, root_id)
def parse_json(s, **kwargs): """Parse a string into a (nbformat, dict) tuple.""" d = json.loads(s, **kwargs) nbf = d.get('nbformat', 1) nbm = d.get('nbformat_minor', 0) return nbf, nbm, d
def parse_py(s, **kwargs): """Parse a string into a (nbformat, string) tuple.""" nbf = current_nbformat nbm = current_nbformat_minor pattern = r'# <nbformat>(?P<nbformat>\d+[\.\d+]*)</nbformat>' m = re.search(pattern,s) if m is not None: digits = m.group('nbformat').split('.') ...
def reads_json(s, **kwargs): """Read a JSON notebook from a string and return the NotebookNode object.""" nbf, minor, d = parse_json(s, **kwargs) if nbf == 1: nb = v1.to_notebook_json(d, **kwargs) nb = v3.convert_to_this_nbformat(nb, orig_version=1) elif nbf == 2: nb = v2.to_note...
def reads_py(s, **kwargs): """Read a .py notebook from a string and return the NotebookNode object.""" nbf, nbm, s = parse_py(s, **kwargs) if nbf == 2: nb = v2.to_notebook_py(s, **kwargs) elif nbf == 3: nb = v3.to_notebook_py(s, **kwargs) else: raise NBFormatError('Unsupporte...
def reads(s, format, **kwargs): """Read a notebook from a string and return the NotebookNode object. This function properly handles notebooks of any version. The notebook returned will always be in the current version's format. Parameters ---------- s : unicode The raw unicode string t...
def writes(nb, format, **kwargs): """Write a notebook to a string in a given format in the current nbformat version. This function always writes the notebook in the current nbformat version. Parameters ---------- nb : NotebookNode The notebook to write. format : (u'json', u'ipynb', u'p...
def write(nb, fp, format, **kwargs): """Write a notebook to a file in a given format in the current nbformat version. This function always writes the notebook in the current nbformat version. Parameters ---------- nb : NotebookNode The notebook to write. fp : file Any file-like...
def _convert_to_metadata(): """Convert to a notebook having notebook metadata.""" import glob for fname in glob.glob('*.ipynb'): print('Converting file:',fname) with open(fname,'r') as f: nb = read(f,u'json') md = new_metadata() if u'name' in nb: md.na...
def load_from_dict(self, src: dict, key): ''' try load value from dict. if key is not exists, mark as state unset. ''' if key in src: self.value = src[key] else: self.reset()
def inputhook_pyglet(): """Run the pyglet event loop by processing pending events only. This keeps processing pending events until stdin is ready. After processing all pending events, a call to time.sleep is inserted. This is needed, otherwise, CPU usage is at 100%. This sleep time should be tuned ...
def matches(self, name): """Does the name match my requirements? To match, a name must match config.testMatch OR config.include and it must not match config.exclude """ return ((self.match.search(name) or (self.include and filter(None, ...
def wantClass(self, cls): """Is the class a wanted test class? A class must be a unittest.TestCase subclass, or match test name requirements. Classes that start with _ are always excluded. """ declared = getattr(cls, '__test__', None) if declared is not None: ...
def wantDirectory(self, dirname): """Is the directory a wanted test directory? All package directories match, so long as they do not match exclude. All other directories must match test requirements. """ tail = op_basename(dirname) if ispackage(dirname): wan...
def wantFile(self, file): """Is the file a wanted test file? The file must be a python source file and match testMatch or include, and not match exclude. Files that match ignore are *never* wanted, regardless of plugin, testMatch, include or exclude settings. """ # never...
def wantFunction(self, function): """Is the function a test function? """ try: if hasattr(function, 'compat_func_name'): funcname = function.compat_func_name else: funcname = function.__name__ except AttributeError: # no...
def wantMethod(self, method): """Is the method a test method? """ try: method_name = method.__name__ except AttributeError: # not a method return False if method_name.startswith('_'): # never collect 'private' methods re...
def wantModule(self, module): """Is the module a test module? The tail of the module name must match test requirements. One exception: we always want __main__. """ declared = getattr(module, '__test__', None) if declared is not None: wanted = declared ...
def decorate_fn_with_doc(new_fn, old_fn, additional_text=""): """Make new_fn have old_fn's doc string. This is particularly useful for the do_... commands that hook into the help system. Adapted from from a comp.lang.python posting by Duncan Booth.""" def wrapper(*args, **kw): return new_fn(...
def _file_lines(fname): """Return the contents of a named file as a list of lines. This function never raises an IOError exception: if the file can't be read, it simply returns an empty list.""" try: outfile = open(fname) except IOError: return [] else: out = outfile.re...
def list_command_pydb(self, arg): """List command to use if we have a newer pydb installed""" filename, first, last = OldPdb.parse_list_cmd(self, arg) if filename is not None: self.print_list_lines(filename, first, last)
def print_list_lines(self, filename, first, last): """The printing (as opposed to the parsing part of a 'list' command.""" try: Colors = self.color_scheme_table.active_colors ColorsNormal = Colors.Normal tpl_line = '%%s%s%%s %s%%s' % (Colors.lineno, ColorsNorm...
def do_pdef(self, arg): """The debugger interface to magic_pdef""" namespaces = [('Locals', self.curframe.f_locals), ('Globals', self.curframe.f_globals)] self.shell.find_line_magic('pdef')(arg, namespaces=namespaces)
def checkline(self, filename, lineno): """Check whether specified line seems to be executable. Return `lineno` if it is, 0 if not (e.g. a docstring, comment, blank line or EOF). Warning: testing is not comprehensive. """ ##########################################################...
def conversion_factor(from_symbol, to_symbol, date): """ Generates a multiplying factor used to convert two currencies """ from_currency = Currency.objects.get(symbol=from_symbol) try: from_currency_price = CurrencyPrice.objects.get(currency=from_currency, date=date).mid_price except Cu...
def convert_currency(from_symbol, to_symbol, value, date): """ Converts an amount of money from one currency to another on a specified date. """ if from_symbol == to_symbol: return value factor = conversion_factor(from_symbol, to_symbol, date) if type(value) == float: output = ...
def compute_return(self, start_date, end_date, rate="MID"): """ Compute the return of the currency between two dates """ if rate not in ["MID", "ASK", "BID"]: raise ValueError("Unknown rate type (%s)- must be 'MID', 'ASK' or 'BID'" % str(rate)) if end_date <= start_d...
def generate_dataframe(self, symbols=None, date_index=None, price_type="mid"): """ Generate a dataframe consisting of the currency prices (specified by symbols) from the start to end date """ # Set defaults if necessary if symbols is None: symbols = list(Curr...
def save(self, *args, **kwargs): """ Sanitation checks """ if self.ask_price < 0: raise ValidationError("Ask price must be greater than zero") if self.bid_price < 0: raise ValidationError("Bid price must be greater than zero") if self.ask_price < s...
def get_stream_enc(stream, default=None): """Return the given stream's encoding or a default. There are cases where sys.std* might not actually be a stream, so check for the encoding attribute prior to returning it, and return a default if it doesn't exist or evaluates as False. `default' is None i...
def getdefaultencoding(): """Return IPython's guess for the default encoding for bytes as text. Asks for stdin.encoding first, to match the calling Terminal, but that is often None for subprocesses. Fall back on locale.getpreferredencoding() which should be a sensible platform default (that respects L...
def get_userpass_value(cli_value, config, key, prompt_strategy): """Gets the username / password from config. Uses the following rules: 1. If it is specified on the cli (`cli_value`), use that. 2. If `config[key]` is specified, use that. 3. Otherwise prompt using `prompt_strategy`. :param cli...
def load_connection_file(self): """load ip/port/hmac config from JSON connection file""" try: fname = filefind(self.connection_file, ['.', self.profile_dir.security_dir]) except IOError: self.log.debug("Connection file not found: %s", self.connection_file) # T...
def write_connection_file(self): """write connection info to JSON file""" if os.path.basename(self.connection_file) == self.connection_file: cf = os.path.join(self.profile_dir.security_dir, self.connection_file) else: cf = self.connection_file write_connection_fil...
def init_heartbeat(self): """start the heart beating""" # heartbeat doesn't share context, because it mustn't be blocked # by the GIL, which is accessed by libzmq when freeing zero-copy messages hb_ctx = zmq.Context() self.heartbeat = Heartbeat(hb_ctx, (self.ip, self.hb_port)) ...
def log_connection_info(self): """display connection info, and store ports""" basename = os.path.basename(self.connection_file) if basename == self.connection_file or \ os.path.dirname(self.connection_file) == self.profile_dir.security_dir: # use shortname tai...
def init_session(self): """create our session object""" default_secure(self.config) self.session = Session(config=self.config, username=u'kernel')
def init_blackhole(self): """redirects stdout/stderr to devnull if necessary""" if self.no_stdout or self.no_stderr: blackhole = open(os.devnull, 'w') if self.no_stdout: sys.stdout = sys.__stdout__ = blackhole if self.no_stderr: sys.std...
def init_io(self): """Redirect input streams and set a display hook.""" if self.outstream_class: outstream_factory = import_item(str(self.outstream_class)) sys.stdout = outstream_factory(self.session, self.iopub_socket, u'stdout') sys.stderr = outstream_factory(self.s...
def init_kernel(self): """Create the Kernel object itself""" kernel_factory = import_item(str(self.kernel_class)) self.kernel = kernel_factory(config=self.config, session=self.session, shell_socket=self.shell_socket, iopub_socket=se...
def init_connector(self): """construct connection function, which handles tunnels.""" self.using_ssh = bool(self.sshkey or self.sshserver) if self.sshkey and not self.sshserver: # We are using ssh directly to the controller, tunneling localhost to localhost self.sshserve...
def register(self): """send the registration_request""" self.log.info("Registering with controller at %s"%self.url) ctx = self.context connect,maybe_tunnel = self.init_connector() reg = ctx.socket(zmq.DEALER) reg.setsockopt(zmq.IDENTITY, self.bident) connect(reg,...
def html_to_text(content): """ Converts html content to plain text """ text = None h2t = html2text.HTML2Text() h2t.ignore_links = False text = h2t.handle(content) return text