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Pyupgrade to Python 3.9 (#4718)

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* Pyupgrade to Python 3.9

* updating DIRECTORY.md

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
This commit is contained in:
Christian Clauss
2021-09-07 13:37:03 +02:00
committed by GitHub
parent 5d5831bdd0
commit cecf43d648
142 changed files with 523 additions and 530 deletions
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6
other/lfu_cache.py
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@ -1,4 +1,6 @@
from typing import Callable, Optional
from __future__ import annotations
from typing import Callable
class DoubleLinkedListNode:
@ -119,7 +121,7 @@ class LFUCache:
"""
return key in self.cache
def get(self, key: int) -> Optional[int]:
def get(self, key: int) -> int | None:
"""
Returns the value for the input key and updates the Double Linked List. Returns
None if key is not present in cache