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Cache _is_setuptools_namespace results to avoid repetitive I/O #2705

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Merged
merged 1 commit into from
Mar 16, 2025
Merged

Cache _is_setuptools_namespace results to avoid repetitive I/O #2705

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1 change: 1 addition & 0 deletions astroid/interpreter/_import/spec.py
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Original file line number Diff line number Diff line change
Expand Up @@ -367,6 +367,7 @@ def contribute_to_path(
)


@lru_cache(maxsize=1024)
def _is_setuptools_namespace(location: pathlib.Path) -> bool:
try:
with open(location / "__init__.py", "rb") as stream:
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6 changes: 5 additions & 1 deletion astroid/manager.py
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Expand Up @@ -439,7 +439,10 @@ def clear_cache(self) -> None:
# pylint: disable=import-outside-toplevel
from astroid.brain.helpers import register_all_brains
from astroid.inference_tip import clear_inference_tip_cache
from astroid.interpreter._import.spec import _find_spec
from astroid.interpreter._import.spec import (
_find_spec,
_is_setuptools_namespace,
)
from astroid.interpreter.objectmodel import ObjectModel
from astroid.nodes._base_nodes import LookupMixIn
from astroid.nodes.scoped_nodes import ClassDef
Expand All @@ -462,6 +465,7 @@ def clear_cache(self) -> None:
ObjectModel.attributes,
ClassDef._metaclass_lookup_attribute,
_find_spec,
_is_setuptools_namespace,
):
lru_cache.cache_clear() # type: ignore[attr-defined]

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