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bpo-32303 - Consistency fixes for namespace loaders (#5481)

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* Make sure ``__spec__.loader`` matches ``__loader__`` for namespace packages.
* Make sure ``__spec__.origin` matches ``__file__`` for namespace packages.

https://bugs.python.org/issue32303
https://bugs.python.org/issue32305
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Barry Warsaw 2018-02-02 15:15:58 -05:00 • committed by GitHub
parent 383b32fe10
commit bbbcf8693b
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10 changed files with 1478 additions and 1436 deletions
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12
Lib/importlib/_bootstrap.py
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@ -522,6 +522,18 @@ def _init_module_attrs(spec, module, *, override=False):
loader = _NamespaceLoader.__new__(_NamespaceLoader)
loader._path = spec.submodule_search_locations
spec.loader = loader
# While the docs say that module.__file__ is not set for
# built-in modules, and the code below will avoid setting it if
# spec.has_location is false, this is incorrect for namespace
# packages. Namespace packages have no location, but their
# __spec__.origin is None, and thus their module.__file__
# should also be None for consistency. While a bit of a hack,
# this is the best place to ensure this consistency.
#
# See # https://docs.python.org/3/library/importlib.html#importlib.abc.Loader.load_module
# and bpo-32305
module.__file__ = None
try:
module.__loader__ = loader
except AttributeError: