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Merge pull request #10261 from jdufresne/found-candidates-six

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Remove six import in resolution/resolvelib/found_candidates.py
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Tzu-ping Chung 2021-08-07 19:43:21 +08:00 committed by GitHub
parent 5f7189b4b8 a3628b70de
commit d3a78ebbfe
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2 changed files with 19 additions and 4 deletions
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news/69311721-677c-46c7-9f29-31a40dddee99.trivial.rst Normal file
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23
src/pip/_internal/resolution/resolvelib/found_candidates.py
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@ -9,15 +9,30 @@ something.
"""
import functools
from typing import Callable, Iterator, Optional, Set, Tuple
from collections.abc import Sequence
from typing import TYPE_CHECKING, Any, Callable, Iterator, Optional, Set, Tuple
from pip._vendor.packaging.version import _BaseVersion
from pip._vendor.six.moves import collections_abc # type: ignore
from .base import Candidate
IndexCandidateInfo = Tuple[_BaseVersion, Callable[[], Optional[Candidate]]]
if TYPE_CHECKING:
SequenceCandidate = Sequence[Candidate]
else:
# For compatibility: Python before 3.9 does not support using [] on the
# Sequence class.
#
# >>> from collections.abc import Sequence
# >>> Sequence[str]
# Traceback (most recent call last):
# File "<stdin>", line 1, in <module>
# TypeError: 'ABCMeta' object is not subscriptable
#
# TODO: Remove this block after dropping Python 3.8 support.
SequenceCandidate = Sequence
def _iter_built(infos: Iterator[IndexCandidateInfo]) -> Iterator[Candidate]:
"""Iterator for ``FoundCandidates``.
@ -90,7 +105,7 @@ def _iter_built_with_inserted(
yield installed
class FoundCandidates(collections_abc.Sequence):
class FoundCandidates(SequenceCandidate):
"""A lazy sequence to provide candidates to the resolver.
The intended usage is to return this from `find_matches()` so the resolver
@ -111,7 +126,7 @@ class FoundCandidates(collections_abc.Sequence):
self._prefers_installed = prefers_installed
self._incompatible_ids = incompatible_ids
def __getitem__(self, index: int) -> Candidate:
def __getitem__(self, index: Any) -> Any:
# Implemented to satisfy the ABC check. This is not needed by the
# resolver, and should not be used by the provider either (for
# performance reasons).