3 from typing import TypeVar, Optional, Dict, Any
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7 # None in CPython but non-None in Jython
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10 # Note: memo and _nil are internal kwargs.
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11 def deepcopy(x: _T, memo: Optional[Dict[int, _T]] = ..., _nil: Any = ...) -> _T: ...
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12 def copy(x: _T) -> _T: ...
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13 class Error(Exception): ...
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