[mypy] Add mypy type annotation part 1 (#4006)
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@@ -60,7 +60,7 @@ class LRUCache(Generic[T]):
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def __len__(self) -> int:
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return len(self.cache)
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def __getitem__(self, key: Hashable) -> T:
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def __getitem__(self, key: Hashable) -> Optional[T]:
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return self.get(key)
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def __setitem__(self, key: Hashable, value: T) -> None:
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@@ -76,7 +76,7 @@ class LRUCache(Generic[T]):
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key: Hashable,
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default_value: Optional[T] = None) -> Optional[T]:
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if key in self.cache:
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value = self.cache[key]
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value: Optional[T] = self.cache[key]
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self.cache.move_to_end(key)
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else:
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value = default_value
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@@ -87,7 +87,7 @@ class LRUCache(Generic[T]):
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self.cache.move_to_end(key)
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self._remove_old_if_needed()
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def _on_remove(self, key: Hashable, value: T):
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def _on_remove(self, key: Hashable, value: Optional[T]):
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pass
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def remove_oldest(self):
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@@ -100,9 +100,11 @@ class LRUCache(Generic[T]):
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while len(self.cache) > self.capacity:
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self.remove_oldest()
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def pop(self, key: Hashable, default_value: Optional[Any] = None) -> T:
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def pop(self,
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key: Hashable,
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default_value: Optional[T] = None) -> Optional[T]:
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run_on_remove = key in self.cache
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value = self.cache.pop(key, default_value)
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value: Optional[T] = self.cache.pop(key, default_value)
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if run_on_remove:
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self._on_remove(key, value)
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return value
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