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[3.9] bpo-40924: Remove protocol for supplying Traversable objects from loaders (GH-20820)

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Remove protocol that loaders can present a files method as found in importlib_resources 1.3-1.6 (added in Python 3.8b1).
This commit is contained in:
Jason R. Coombs 2020-06-14 08:12:20 -04:00 • committed by GitHub
parent 83cd968f5c
commit 8a3469047c
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3 changed files with 2 additions and 14 deletions
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3
Doc/library/importlib.rst
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@ -813,9 +813,6 @@ ABC hierarchy::
methods. Therefore, any loader supplying TraversableReader methods. Therefore, any loader supplying TraversableReader
also supplies ResourceReader. also supplies ResourceReader.
Loaders that wish to support resource reading are expected to
implement this interface.
.. versionadded:: 3.9 .. versionadded:: 3.9

12
Lib/importlib/_common.py
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@ -11,17 +11,7 @@ def from_package(package):
Return a Traversable object for the given package. Return a Traversable object for the given package.
""" """
spec = package.__spec__ return fallback_resources(package.__spec__)
return from_traversable_resources(spec) or fallback_resources(spec)
def from_traversable_resources(spec):
"""
If the spec.loader implements TraversableResources,
directly or implicitly, it will have a ``files()`` method.
"""
with contextlib.suppress(AttributeError):
return spec.loader.files()
def fallback_resources(spec): def fallback_resources(spec):

1
Misc/NEWS.d/next/Library/2020-06-11-23-41-50.bpo-40924.m17Fkm.rst Normal file
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@ -0,0 +1 @@
Removed support for loaders implementing .files and supplying TraversableResources.