1 from typing import Any, TypeVar
5 # None in CPython but non-None in Jython
8 # Note: memo and _nil are internal kwargs.
9 def deepcopy(x: _T, memo: dict[int, Any] | None = ..., _nil: Any = ...) -> _T: ...
10 def copy(x: _T) -> _T: ...
12 class Error(Exception): ...