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def build(self, autobuilding=False):
"""Build wheels.
:param unpack: If True, replace the sdist we built from the with the
newly built wheel, in preparation for installation.
:return: True if all the wheels built correctly.
"""
assert self._wheel_dir or (autobuilding... |
def iter_symbols(code):
"""Yield names and strings used by `code` and its nested code objects"""
for name in code.co_names:
yield name
for const in code.co_consts:
if isinstance(const, basestring):
yield const
elif isinstance(const, CodeType):
for name in iter... |
def ensure_fresh_rates(func):
"""Decorator for Backend that ensures rates are fresh within last 5 mins"""
def wrapper(self, *args, **kwargs):
if self.last_updated + timedelta(minutes=5) < zulu.now():
self.refresh()
return func(self, *args, **kwargs)
return wrapper |
def quotation(self, origin, target):
"""Return quotation between two currencies (origin, target)"""
a = self.rate(origin)
b = self.rate(target)
if a and b:
return Decimal(b) / Decimal(a)
return None |
def _add_egg_info(self, cmd):
"""
Add paths for egg-info files for an external egg-base.
The egg-info files are written to egg-base. If egg-base is
outside the current working directory, this method
searchs the egg-base directory for files to include
in the manifest. Use... |
def write_delete_marker_file(directory):
"""
Write the pip delete marker file into this directory.
"""
filepath = os.path.join(directory, PIP_DELETE_MARKER_FILENAME)
with open(filepath, 'w') as marker_fp:
marker_fp.write(DELETE_MARKER_MESSAGE) |
def running_under_virtualenv():
"""
Return True if we're running inside a virtualenv, False otherwise.
"""
if hasattr(sys, 'real_prefix'):
return True
elif sys.prefix != getattr(sys, "base_prefix", sys.prefix):
return True
return False |
def __get_username():
""" Returns the effective username of the current process. """
if WINDOWS:
return getpass.getuser()
import pwd
return pwd.getpwuid(os.geteuid()).pw_name |
def distutils_scheme(dist_name, user=False, home=None, root=None,
isolated=False):
"""
Return a distutils install scheme
"""
from distutils.dist import Distribution
scheme = {}
if isolated:
extra_dist_args = {"script_args": ["--no-user-cfg"]}
else:
extr... |
def parse_cache_control(self, headers):
"""
Parse the cache control headers returning a dictionary with values
for the different directives.
"""
retval = {}
cc_header = 'cache-control'
if 'Cache-Control' in headers:
cc_header = 'Cache-Control'
... |
def cached_request(self, request):
"""
Return a cached response if it exists in the cache, otherwise
return False.
"""
cache_url = self.cache_url(request.url)
cc = self.parse_cache_control(request.headers)
# non-caching states
no_cache = True if 'no-cache... |
def cache_response(self, request, response, body=None):
"""
Algorithm for caching requests.
This assumes a requests Response object.
"""
# From httplib2: Don't cache 206's since we aren't going to
# handle byte range requests
if response.status not... |
def _update_zipimporter_cache(normalized_path, cache, updater=None):
"""
Update zipimporter cache data for a given normalized path.
Any sub-path entries are processed as well, i.e. those corresponding to zip
archives embedded in other zip archives.
Given updater is a callable taking a cache entry ... |
def get_win_launcher(type):
"""
Load the Windows launcher (executable) suitable for launching a script.
`type` should be either 'cli' or 'gui'
Returns the executable as a byte string.
"""
launcher_fn = '%s.exe' % type
if platform.machine().lower() == 'arm':
launcher_fn = launcher_f... |
def pseudo_tempname(self):
"""Return a pseudo-tempname base in the install directory.
This code is intentionally naive; if a malicious party can write to
the target directory you're already in deep doodoo.
"""
try:
pid = os.getpid()
except:
pid = r... |
def install_script(self, dist, script_name, script_text, dev_path=None):
"""Generate a legacy script wrapper and install it"""
spec = str(dist.as_requirement())
is_script = is_python_script(script_text, script_name)
if is_script:
script_text = (ScriptWriter.get_header(script... |
def _load_template(dev_path):
"""
There are a couple of template scripts in the package. This
function loads one of them and prepares it for use.
"""
# See https://bitbucket.org/pypa/setuptools/issue/134 for info
# on script file naming and downstream issues with SVR4
... |
def install_site_py(self):
"""Make sure there's a site.py in the target dir, if needed"""
if self.sitepy_installed:
return # already did it, or don't need to
sitepy = os.path.join(self.install_dir, "site.py")
source = resource_string("setuptools", "site-patch.py")
... |
def save(self):
"""Write changed .pth file back to disk"""
if not self.dirty:
return
data = '\n'.join(map(self.make_relative, self.paths))
if data:
log.debug("Saving %s", self.filename)
data = (
"import sys; sys.__plen = len(sys.path)\... |
def as_header(self):
"""
Workaround Jython's sys.executable being a .sh (an invalid
shebang line interpreter)
"""
if not is_sh(self[0]):
return super(JythonCommandSpec, self).as_header()
if self.options:
# Can't apply the workaround, leave it brok... |
def _adjust_header(type_, orig_header):
"""
Make sure 'pythonw' is used for gui and and 'python' is used for
console (regardless of what sys.executable is).
"""
pattern = 'pythonw.exe'
repl = 'python.exe'
if type_ == 'gui':
pattern, repl = repl, patter... |
def convert(self, value):
"""
Convert values to an appropriate type. dicts, lists and tuples are
replaced by their converting alternatives. Strings are checked to
see if they have a conversion format and are converted if they do.
"""
if not isinstance(value, ConvertingDic... |
def add_filters(self, filterer, filters):
"""Add filters to a filterer from a list of names."""
for f in filters:
try:
filterer.addFilter(self.config['filters'][f])
except StandardError as e:
raise ValueError('Unable to add filter %r: %s' % (f, e)) |
def configure_handler(self, config):
"""Configure a handler from a dictionary."""
formatter = config.pop('formatter', None)
if formatter:
try:
formatter = self.config['formatters'][formatter]
except StandardError as e:
raise ValueError('Una... |
def add_handlers(self, logger, handlers):
"""Add handlers to a logger from a list of names."""
for h in handlers:
try:
logger.addHandler(self.config['handlers'][h])
except StandardError as e:
raise ValueError('Unable to add handler %r: %s' % (h, e)... |
def common_logger_config(self, logger, config, incremental=False):
"""
Perform configuration which is common to root and non-root loggers.
"""
level = config.get('level', None)
if level is not None:
logger.setLevel(_checkLevel(level))
if not incremental:
... |
def from_envvar(self, variable_name, silent=False):
"""Loads a configuration from an environment variable pointing to
a configuration file. This is basically just a shortcut with nicer
error messages for this line of code::
app.config.from_pyfile(os.environ['YOURAPPLICATION_SETTING... |
def from_pyfile(self, filename, silent=False):
"""Updates the values in the config from a Python file. This function
behaves as if the file was imported as module with the
:meth:`from_object` function.
:param filename: the filename of the config. This can either be an
... |
def from_object(self, obj):
"""Updates the values from the given object. An object can be of one
of the following two types:
- a string: in this case the object with that name will be imported
- an actual object reference: that object is used directly
Objects are usually e... |
def _execfile(filename, globals, locals=None):
"""
Python 3 implementation of execfile.
"""
mode = 'rb'
with open(filename, mode) as stream:
script = stream.read()
# compile() function in Python 2.6 and 3.1 requires LF line endings.
if sys.version_info[:2] < (2, 7) or sys.version_inf... |
def override_temp(replacement):
"""
Monkey-patch tempfile.tempdir with replacement, ensuring it exists
"""
if not os.path.isdir(replacement):
os.makedirs(replacement)
saved = tempfile.tempdir
tempfile.tempdir = replacement
try:
yield
finally:
tempfile.tempdir =... |
def run_setup(setup_script, args):
"""Run a distutils setup script, sandboxed in its directory"""
setup_dir = os.path.abspath(os.path.dirname(setup_script))
with setup_context(setup_dir):
try:
sys.argv[:] = [setup_script]+list(args)
sys.path.insert(0, setup_dir)
#... |
def dump(cls, type, exc):
"""
Always return a dumped (pickled) type and exc. If exc can't be pickled,
wrap it in UnpickleableException first.
"""
try:
return pickle.dumps(type), pickle.dumps(exc)
except Exception:
return cls.dump(cls, cls(repr(exc)... |
def check_rev_options(self, rev, dest, rev_options):
"""Check the revision options before checkout to compensate that tags
and branches may need origin/ as a prefix.
Returns the SHA1 of the branch or tag if found.
"""
revisions = self.get_refs(dest)
origin_rev = 'origin/... |
def get_url_rev(self):
"""
Prefixes stub URLs like 'user@hostname:user/repo.git' with 'ssh://'.
That's required because although they use SSH they sometimes doesn't
work with a ssh:// scheme (e.g. Github). But we need a scheme for
parsing. Hence we remove it again afterwards and ... |
def is_important_traceback(self, important_module, tb):
"""Walks a traceback's frames and checks if any of the frames
originated in the given important module. If that is the case then we
were able to import the module itself but apparently something went
wrong when the module was impor... |
def getitem(self, obj, argument):
"""Get an item or attribute of an object but prefer the item."""
try:
return obj[argument]
except (TypeError, LookupError):
if isinstance(argument, string_types):
try:
attr = str(argument)
... |
def _generate(self, source, name, filename, defer_init=False):
"""Internal hook that can be overridden to hook a different generate
method in.
.. versionadded:: 2.5
"""
return generate(source, self, name, filename, defer_init=defer_init) |
def compile_templates(self, target, extensions=None, filter_func=None,
zip='deflated', log_function=None,
ignore_errors=True, py_compile=False):
"""Finds all the templates the loader can find, compiles them
and stores them in `target`. If `zip` is `No... |
def list_templates(self, extensions=None, filter_func=None):
"""Returns a list of templates for this environment. This requires
that the loader supports the loader's
:meth:`~BaseLoader.list_templates` method.
If there are other files in the template folder besides the
actual te... |
def get_default_cache():
"""Determine the default cache location
This returns the ``PYTHON_EGG_CACHE`` environment variable, if set.
Otherwise, on Windows, it returns a "Python-Eggs" subdirectory of the
"Application Data" directory. On all other systems, it's "~/.python-eggs".
"""
try:
... |
def find_eggs_in_zip(importer, path_item, only=False):
"""
Find eggs in zip files; possibly multiple nested eggs.
"""
if importer.archive.endswith('.whl'):
# wheels are not supported with this finder
# they don't have PKG-INFO metadata, and won't ever contain eggs
return
meta... |
def find_on_path(importer, path_item, only=False):
"""Yield distributions accessible on a sys.path directory"""
path_item = _normalize_cached(path_item)
if os.path.isdir(path_item) and os.access(path_item, os.R_OK):
if path_item.lower().endswith('.egg'):
# unpacked egg
yield... |
def declare_namespace(packageName):
"""Declare that package 'packageName' is a namespace package"""
imp.acquire_lock()
try:
if packageName in _namespace_packages:
return
path, parent = sys.path, None
if '.' in packageName:
parent = '.'.join(packageName.split... |
def yield_lines(strs):
"""Yield non-empty/non-comment lines of a string or sequence"""
if isinstance(strs, string_types):
for s in strs.splitlines():
s = s.strip()
# skip blank lines/comments
if s and not s.startswith('#'):
yield s
else:
fo... |
def _get_mro(cls):
"""Get an mro for a type or classic class"""
if not isinstance(cls, type):
class cls(cls, object): pass
return cls.__mro__[1:]
return cls.__mro__ |
def _find_adapter(registry, ob):
"""Return an adapter factory for `ob` from `registry`"""
for t in _get_mro(getattr(ob, '__class__', type(ob))):
if t in registry:
return registry[t] |
def ensure_directory(path):
"""Ensure that the parent directory of `path` exists"""
dirname = os.path.dirname(path)
if not os.path.isdir(dirname):
os.makedirs(dirname) |
def iter_entry_points(self, group, name=None):
"""Yield entry point objects from `group` matching `name`
If `name` is None, yields all entry points in `group` from all
distributions in the working set, otherwise only ones matching
both `group` and `name` are yielded (in distribution ord... |
def subscribe(self, callback):
"""Invoke `callback` for all distributions (including existing ones)"""
if callback in self.callbacks:
return
self.callbacks.append(callback)
for dist in self:
callback(dist) |
def can_add(self, dist):
"""Is distribution `dist` acceptable for this environment?
The distribution must match the platform and python version
requirements specified when this environment was created, or False
is returned.
"""
return (self.python is None or dist.py_vers... |
def best_match(self, req, working_set, installer=None):
"""Find distribution best matching `req` and usable on `working_set`
This calls the ``find(req)`` method of the `working_set` to see if a
suitable distribution is already active. (This may raise
``VersionConflict`` if an unsuitabl... |
def extraction_error(self):
"""Give an error message for problems extracting file(s)"""
old_exc = sys.exc_info()[1]
cache_path = self.extraction_path or get_default_cache()
err = ExtractionError("""Can't extract file(s) to egg cache
The following error occurred while trying to extract... |
def is_invalid_marker(cls, text):
"""
Validate text as a PEP 426 environment marker; return an exception
if invalid or False otherwise.
"""
try:
cls.evaluate_marker(text)
except SyntaxError as e:
return cls.normalize_exception(e)
return Fal... |
def normalize_exception(exc):
"""
Given a SyntaxError from a marker evaluation, normalize the error
message:
- Remove indications of filename and line number.
- Replace platform-specific error messages with standard error
messages.
"""
subs = {
... |
def evaluate_marker(cls, text, extra=None):
"""
Evaluate a PEP 426 environment marker on CPython 2.4+.
Return a boolean indicating the marker result in this environment.
Raise SyntaxError if marker is invalid.
This implementation uses the 'parser' module, which is not implemente... |
def _markerlib_evaluate(cls, text):
"""
Evaluate a PEP 426 environment marker using markerlib.
Return a boolean indicating the marker result in this environment.
Raise SyntaxError if marker is invalid.
"""
from pip._vendor import _markerlib
# markerlib implements ... |
def insert_on(self, path, loc = None):
"""Insert self.location in path before its nearest parent directory"""
loc = loc or self.location
if not loc:
return
nloc = _normalize_cached(loc)
bdir = os.path.dirname(nloc)
npath= [(p and _normalize_cached(p) or p) f... |
def _preparse_requirement(self, requires_dist):
"""Convert 'Foobar (1); baz' to ('Foobar ==1', 'baz')
Split environment marker, add == prefix to version specifiers as
necessary, and remove parenthesis.
"""
parts = requires_dist.split(';', 1) + ['']
distvers = parts[0].str... |
def format(self, record):
"""
Calls the standard formatter, but will indent all of the log messages
by our current indentation level.
"""
formatted = logging.Formatter.format(self, record)
formatted = "".join([
(" " * get_indentation()) + line
for ... |
def format_currency(number, currency, format=None,
locale=LC_NUMERIC, currency_digits=True,
format_type='standard', decimal_quantization=True):
"""Return formatted currency value.
>>> format_currency(1099.98, 'USD', locale='en_US')
u'$1,099.98'
>>> format_curren... |
def parse_pattern(pattern):
"""Parse number format patterns"""
if isinstance(pattern, NumberPattern):
return pattern
def _match_number(pattern):
rv = number_re.search(pattern)
if rv is None:
raise ValueError('Invalid number pattern %r' % pattern)
return rv.groups... |
def get_decimal_quantum(precision):
"""Return minimal quantum of a number, as defined by precision."""
assert isinstance(precision, (int, decimal.Decimal))
return decimal.Decimal(10) ** (-precision) |
def get_decimal_precision(number):
"""Return maximum precision of a decimal instance's fractional part.
Precision is extracted from the fractional part only.
"""
# Copied from: https://github.com/mahmoud/boltons/pull/59
assert isinstance(number, decimal.Decimal)
decimal_tuple = number.normalize(... |
def apply(
self, value, locale, currency=None, currency_digits=True,
decimal_quantization=True):
"""Renders into a string a number following the defined pattern.
Forced decimal quantization is active by default so we'll produce a
number string that is strictly following C... |
def scientific_notation_elements(self, value, locale):
""" Returns normalized scientific notation components of a value."""
# Normalize value to only have one lead digit.
exp = value.adjusted()
value = value * get_decimal_quantum(exp)
assert value.adjusted() == 0
# Shift... |
def patch_for_specialized_compiler():
"""
Patch functions in distutils.msvc9compiler to use the standalone compiler
build for Python (Windows only). Fall back to original behavior when the
standalone compiler is not available.
"""
if 'distutils' not in globals():
# The module isn't avail... |
def total_seconds(td):
"""Python 2.6 compatability"""
if hasattr(td, 'total_seconds'):
return td.total_seconds()
ms = td.microseconds
secs = (td.seconds + td.days * 24 * 3600)
return (ms + secs * 10**6) / 10**6 |
def parse_requirements(strs):
"""Yield ``Requirement`` objects for each specification in `strs`
`strs` must be a string, or a (possibly-nested) iterable thereof.
"""
# create a steppable iterator, so we can handle \-continuations
lines = iter(yield_lines(strs))
def scan_list(ITEM, TERMINATOR, ... |
def _initialize(g=globals()):
"Set up global resource manager (deliberately not state-saved)"
manager = ResourceManager()
g['_manager'] = manager
for name in dir(manager):
if not name.startswith('_'):
g[name] = getattr(manager, name) |
def _initialize_master_working_set():
"""
Prepare the master working set and make the ``require()``
API available.
This function has explicit effects on the global state
of pkg_resources. It is intended to be invoked once at
the initialization of this module.
Invocation by other packages i... |
def _get_unpatched(cls):
"""Protect against re-patching the distutils if reloaded
Also ensures that no other distutils extension monkeypatched the distutils
first.
"""
while cls.__module__.startswith('setuptools'):
cls, = cls.__bases__
if not cls.__module__.startswith('distutils'):
... |
def _patch_distribution_metadata_write_pkg_info():
"""
Workaround issue #197 - Python 3 prior to 3.2.2 uses an environment-local
encoding to save the pkg_info. Monkey-patch its write_pkg_info method to
correct this undesirable behavior.
"""
environment_local = (3,) <= sys.version_info[:3] < (3, ... |
def check_extras(dist, attr, value):
"""Verify that extras_require mapping is valid"""
try:
for k,v in value.items():
if ':' in k:
k,m = k.split(':',1)
if pkg_resources.invalid_marker(m):
raise DistutilsSetupError("Invalid environment marke... |
def check_requirements(dist, attr, value):
"""Verify that install_requires is a valid requirements list"""
try:
list(pkg_resources.parse_requirements(value))
except (TypeError, ValueError) as error:
tmpl = (
"{attr!r} must be a string or list of strings "
"containing ... |
def fetch_build_egg(self, req):
"""Fetch an egg needed for building"""
try:
cmd = self._egg_fetcher
cmd.package_index.to_scan = []
except AttributeError:
from setuptools.command.easy_install import easy_install
dist = self.__class__({'script_args'... |
def _include_misc(self,name,value):
"""Handle 'include()' for list/tuple attrs without a special handler"""
if not isinstance(value,sequence):
raise DistutilsSetupError(
"%s: setting must be a list (%r)" % (name, value)
)
try:
old = getattr(se... |
def do_dice_roll():
"""
Roll n-sided dice and return each result and the total
"""
options = get_options()
dice = Dice(options.sides)
rolls = [dice.roll() for n in range(options.number)]
for roll in rolls:
print('rolled', roll)
if options.number > 1:
print('total', sum(rolls)) |
def price_converter(obj):
"""Ensures that string prices are converted into Price objects."""
if isinstance(obj, str):
obj = PriceClass.parse(obj)
return obj |
def price(*args, **kwargs):
"""Price field for attrs.
See `help(attr.ib)` for full signature.
Usage:
>>> from pricing import fields
... @attr.s
... class Test:
... price: Price = fields.price(default='USD 5.00')
...
... Test()
Test(price=USD 5.0... |
def validate(self, request):
"""Validate JSON-RPC request.
:param request: RPC request object
:type request: dict
"""
try:
validate_version(request)
validate_method(request)
validate_params(request)
validate_id(request)
e... |
def get_method(self, args):
"""Get request method for service application."""
try:
method = self.app[args['method']]
except KeyError:
method_not_found(args['id'])
else:
return method |
def apply(self, method, args):
"""Apply application method."""
try:
params = args['params']
if isinstance(params, dict):
result = method(**params)
else:
result = method(*params)
except Exception as error:
server_err... |
def module(self):
"""The name of the current module if the request was dispatched
to an actual module. This is deprecated functionality, use blueprints
instead.
"""
from warnings import warn
warn(DeprecationWarning('modules were deprecated in favor of '
... |
def blueprint(self):
"""The name of the current blueprint"""
if self.url_rule and '.' in self.url_rule.endpoint:
return self.url_rule.endpoint.rsplit('.', 1)[0] |
def get_json(self, force=False, silent=False, cache=True):
"""Parses the incoming JSON request data and returns it. If
parsing fails the :meth:`on_json_loading_failed` method on the
request object will be invoked. By default this function will
only load the json data if the mimetype is... |
def attach_enctype_error_multidict(request):
"""Since Flask 0.8 we're monkeypatching the files object in case a
request is detected that does not use multipart form data but the files
object is accessed.
"""
oldcls = request.files.__class__
class newcls(oldcls):
def __getitem__(self, key... |
def make_abstract_dist(req_to_install):
"""Factory to make an abstract dist object.
Preconditions: Either an editable req with a source_dir, or satisfied_by or
a wheel link, or a non-editable req with a source_dir.
:return: A concrete DistAbstraction.
"""
if req_to_install.editable:
re... |
def add_requirement(self, install_req, parent_req_name=None):
"""Add install_req as a requirement to install.
:param parent_req_name: The name of the requirement that needed this
added. The name is used because when multiple unnamed requirements
resolve to the same name, we coul... |
def _walk_req_to_install(self, handler):
"""Call handler for all pending reqs.
:param handler: Handle a single requirement. Should take a requirement
to install. Can optionally return an iterable of additional
InstallRequirements to cover.
"""
# The list() here i... |
def prepare_files(self, finder):
"""
Prepare process. Create temp directories, download and/or unpack files.
"""
# make the wheelhouse
if self.wheel_download_dir:
ensure_dir(self.wheel_download_dir)
self._walk_req_to_install(
functools.partial(sel... |
def _check_skip_installed(self, req_to_install, finder):
"""Check if req_to_install should be skipped.
This will check if the req is installed, and whether we should upgrade
or reinstall it, taking into account all the relevant user options.
After calling this req_to_install will only ... |
def _prepare_file(self, finder, req_to_install):
"""Prepare a single requirements files.
:return: A list of addition InstallRequirements to also install.
"""
# Tell user what we are doing for this requirement:
# obtain (editable), skipping, processing (local url), collecting
... |
def cleanup_files(self):
"""Clean up files, remove builds."""
logger.debug('Cleaning up...')
with indent_log():
for req in self.reqs_to_cleanup:
req.remove_temporary_source() |
def _to_install(self):
"""Create the installation order.
The installation order is topological - requirements are installed
before the requiring thing. We break cycles at an arbitrary point,
and make no other guarantees.
"""
# The current implementation, which we may cha... |
def install(self, install_options, global_options=(), *args, **kwargs):
"""
Install everything in this set (after having downloaded and unpacked
the packages)
"""
to_install = self._to_install()
if to_install:
logger.info(
'Installing collecte... |
def _get_all_ns_packages(self):
"""Return sorted list of all package namespaces"""
nsp = set()
for pkg in self.distribution.namespace_packages or []:
pkg = pkg.split('.')
while pkg:
nsp.add('.'.join(pkg))
pkg.pop()
return sorted(nsp... |
def default(self, obj):
"""
Convert QuerySet objects to their list counter-parts
"""
if isinstance(obj, models.Model):
return self.encode(model_to_dict(obj))
elif isinstance(obj, models.query.QuerySet):
return serializers.serialize('json', obj)
els... |
def html_annotate(doclist, markup=default_markup):
"""
doclist should be ordered from oldest to newest, like::
>>> version1 = 'Hello World'
>>> version2 = 'Goodbye World'
>>> print(html_annotate([(version1, 'version 1'),
... (version2, 'version 2')]))
... |
def tokenize_annotated(doc, annotation):
"""Tokenize a document and add an annotation attribute to each token
"""
tokens = tokenize(doc, include_hrefs=False)
for tok in tokens:
tok.annotation = annotation
return tokens |
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