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1import sys
2import typing as t
4__all__ = ("Self",)
6if sys.version_info >= (3, 11): # pragma: no cover
7 from typing import Self
8elif t.TYPE_CHECKING:
9 from typing_extensions import Self
10else: # pragma: no cover
12 class _PlaceholderMeta(type):
13 # This is meant to make it easier to debug the presence of placeholder
14 # classes.
15 def __repr__(self):
16 return f"placeholder for typing.{self.__name__}"
18 class Self(metaclass=_PlaceholderMeta):
19 """Placeholder for "typing.Self"."""