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103 lines
3.4 KiB
Python
103 lines
3.4 KiB
Python
import sys
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from typing import Any, Optional, Iterable
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from httpie.cookies import HTTPieCookiePolicy
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from http import cookiejar # noqa
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# Request does not carry the original policy attached to the
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# cookie jar, so until it is resolved we change the global cookie
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# policy. <https://github.com/psf/requests/issues/5449>
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cookiejar.DefaultCookiePolicy = HTTPieCookiePolicy
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is_windows = 'win32' in str(sys.platform).lower()
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is_frozen = getattr(sys, 'frozen', False)
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MIN_SUPPORTED_PY_VERSION = (3, 7)
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MAX_SUPPORTED_PY_VERSION = (3, 11)
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try:
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from functools import cached_property
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except ImportError:
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# Can be removed once we drop Python <3.8 support.
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# Taken from `django.utils.functional.cached_property`.
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class cached_property:
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"""
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Decorator that converts a method with a single self argument into a
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property cached on the instance.
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A cached property can be made out of an existing method:
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(e.g. ``url = cached_property(get_absolute_url)``).
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The optional ``name`` argument is obsolete as of Python 3.6 and will be
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deprecated in Django 4.0 (#30127).
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"""
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name = None
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@staticmethod
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def func(instance):
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raise TypeError(
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'Cannot use cached_property instance without calling '
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'__set_name__() on it.'
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)
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def __init__(self, func, name=None):
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self.real_func = func
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self.__doc__ = getattr(func, '__doc__')
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def __set_name__(self, owner, name):
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if self.name is None:
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self.name = name
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self.func = self.real_func
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elif name != self.name:
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raise TypeError(
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"Cannot assign the same cached_property to two different names "
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"(%r and %r)." % (self.name, name)
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)
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def __get__(self, instance, cls=None):
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"""
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Call the function and put the return value in instance.__dict__ so that
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subsequent attribute access on the instance returns the cached value
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instead of calling cached_property.__get__().
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"""
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if instance is None:
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return self
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res = instance.__dict__[self.name] = self.func(instance)
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return res
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# importlib_metadata was a provisional module, so the APIs changed quite a few times
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# between 3.8-3.10. It was also not included in the standard library until 3.8, so
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# we install the backport for <3.8.
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if sys.version_info >= (3, 8):
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import importlib.metadata as importlib_metadata
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else:
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import importlib_metadata
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def find_entry_points(entry_points: Any, group: str) -> Iterable[importlib_metadata.EntryPoint]:
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if hasattr(entry_points, "select"): # Python 3.10+ / importlib_metadata >= 3.9.0
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return entry_points.select(group=group)
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else:
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return set(entry_points.get(group, ()))
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def get_dist_name(entry_point: importlib_metadata.EntryPoint) -> Optional[str]:
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dist = getattr(entry_point, "dist", None)
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if dist is not None: # Python 3.10+
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return dist.name
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match = entry_point.pattern.match(entry_point.value)
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if not (match and match.group('module')):
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return None
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package = match.group('module').split('.')[0]
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try:
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metadata = importlib_metadata.metadata(package)
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except importlib_metadata.PackageNotFoundError:
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return None
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else:
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return metadata.get('name')
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