1  from typing import Any, Dict, Optional, TypeVar
   2  
   3  _T = TypeVar("_T")
   4  
   5  # None in CPython but non-None in Jython
   6  PyStringMap: Any
   7  
   8  # Note: memo and _nil are internal kwargs.
   9  def deepcopy(x: _T, memo: Optional[Dict[int, Any]] = ..., _nil: Any = ...) -> _T: ...
  10  def copy(x: _T) -> _T: ...
  11  
  12  class Error(Exception): ...
  13  
  14  error = Error
  15