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Code Issues Releases Activity

Cache results and remove unused implementation

This commit is contained in:
Tzu-ping Chung 2020-09-30 15:09:59 +08:00
parent a270ca5616
commit 01c9b6cf25
1 changed files with 7 additions and 4 deletions
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11
src/pip/_internal/resolution/resolvelib/found_candidates.py
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@ -1,5 +1,6 @@
from pip._vendor.six.moves import collections_abc # type: ignore
from pip._internal.utils.compat import lru_cache
from pip._internal.utils.typing import MYPY_CHECK_RUNNING
if MYPY_CHECK_RUNNING:
@ -96,10 +97,10 @@ class FoundCandidates(collections_abc.Sequence):
def __getitem__(self, index):
# type: (int) -> Candidate
for i, value in enumerate(self):
if index == i:
return value
raise IndexError(index)
# 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).
raise NotImplementedError("don't do this")
def __iter__(self):
# type: () -> Iterator[Candidate]
@ -109,10 +110,12 @@ class FoundCandidates(collections_abc.Sequence):
klass = _InstalledReplacesCandidatesIterator
return klass(self._get_others, self._installed)
@lru_cache(maxsize=1)
def __len__(self):
# type: () -> int
return sum(1 for _ in self)
@lru_cache(maxsize=1)
def __bool__(self):
# type: () -> bool
if self._prefers_installed and self._installed: