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GH-109653: Defer import of importlib.metadata._adapters #109829

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merged 3 commits into from
Mar 21, 2024
Merged

GH-109653: Defer import of importlib.metadata._adapters #109829

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5d01d0c
adapters
AA-Turner Sep 25, 2023
0dc96f1
Add comments for deferred imports with links to rationale.
jaraco Mar 21, 2024
9abc8e9
Add blurb
jaraco Mar 21, 2024
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4 changes: 3 additions & 1 deletion Lib/importlib/metadata/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,7 @@
import collections
import inspect

from . import _adapters, _meta
from . import _meta
from ._collections import FreezableDefaultDict, Pair
from ._functools import method_cache, pass_none
from ._itertools import always_iterable, unique_everseen
Expand Down Expand Up @@ -439,6 +439,8 @@ def metadata(self) -> _meta.PackageMetadata:
The returned object will have keys that name the various bits of
metadata. See PEP 566 for details.
"""
from . import _adapters

opt_text = (
self.read_text('METADATA')
or self.read_text('PKG-INFO')
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3 changes: 1 addition & 2 deletions Lib/importlib/resources/_common.py
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Expand Up @@ -12,8 +12,6 @@
from typing import Union, Optional, cast
from .abc import ResourceReader, Traversable

from ._adapters import wrap_spec

Package = Union[types.ModuleType, str]
Anchor = Package

Expand Down Expand Up @@ -109,6 +107,7 @@ def from_package(package: types.ModuleType):
Return a Traversable object for the given package.

"""
from ._adapters import wrap_spec
spec = wrap_spec(package)
reader = spec.loader.get_resource_reader(spec.name)
return reader.files()
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