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- from typing import Any, TypeVar
- class _DefaultPlaceholder:
- """
- You shouldn't use this class directly.
- It's used internally to recognize when a default value has been overwritten, even
- if the overridden default value was truthy.
- """
- def __init__(self, value: Any):
- self.value = value
- def __bool__(self) -> bool:
- return bool(self.value)
- def __eq__(self, o: object) -> bool:
- return isinstance(o, _DefaultPlaceholder) and o.value == self.value
- _TDefaultType = TypeVar("_TDefaultType")
- def Default(value: _TDefaultType) -> _TDefaultType:
- """
- You shouldn't use this function directly.
- It's used internally to recognize when a default value has been overwritten, even
- if the overridden default value was truthy.
- """
- return _DefaultPlaceholder(value) # type: ignore
|
