1  from typing import Any, Callable, Hashable, Iterable, Iterator, MutableMapping, Optional, TypeVar, Union
   2  
   3  _T = TypeVar("_T")
   4  _Setlike = Union[BaseSet[_T], Iterable[_T]]
   5  _SelfT = TypeVar("_SelfT")
   6  
   7  class BaseSet(Iterable[_T]):
   8      def __init__(self) -> None: ...
   9      def __len__(self) -> int: ...
  10      def __repr__(self) -> str: ...
  11      def __str__(self) -> str: ...
  12      def __iter__(self) -> Iterator[_T]: ...
  13      def __cmp__(self, other: Any) -> int: ...
  14      def __eq__(self, other: Any) -> bool: ...
  15      def __ne__(self, other: Any) -> bool: ...
  16      def copy(self: _SelfT) -> _SelfT: ...
  17      def __copy__(self: _SelfT) -> _SelfT: ...
  18      def __deepcopy__(self: _SelfT, memo: MutableMapping[int, BaseSet[_T]]) -> _SelfT: ...
  19      def __or__(self: _SelfT, other: BaseSet[_T]) -> _SelfT: ...
  20      def union(self: _SelfT, other: _Setlike[_T]) -> _SelfT: ...
  21      def __and__(self: _SelfT, other: BaseSet[_T]) -> _SelfT: ...
  22      def intersection(self: _SelfT, other: _Setlike[Any]) -> _SelfT: ...
  23      def __xor__(self: _SelfT, other: BaseSet[_T]) -> _SelfT: ...
  24      def symmetric_difference(self: _SelfT, other: _Setlike[_T]) -> _SelfT: ...
  25      def __sub__(self: _SelfT, other: BaseSet[_T]) -> _SelfT: ...
  26      def difference(self: _SelfT, other: _Setlike[Any]) -> _SelfT: ...
  27      def __contains__(self, element: Any) -> bool: ...
  28      def issubset(self, other: BaseSet[_T]) -> bool: ...
  29      def issuperset(self, other: BaseSet[_T]) -> bool: ...
  30      def __le__(self, other: BaseSet[_T]) -> bool: ...
  31      def __ge__(self, other: BaseSet[_T]) -> bool: ...
  32      def __lt__(self, other: BaseSet[_T]) -> bool: ...
  33      def __gt__(self, other: BaseSet[_T]) -> bool: ...
  34  
  35  class ImmutableSet(BaseSet[_T], Hashable):
  36      def __init__(self, iterable: Optional[_Setlike[_T]] = ...) -> None: ...
  37      def __hash__(self) -> int: ...
  38  
  39  class Set(BaseSet[_T]):
  40      def __init__(self, iterable: Optional[_Setlike[_T]] = ...) -> None: ...
  41      def __ior__(self: _SelfT, other: BaseSet[_T]) -> _SelfT: ...
  42      def union_update(self, other: _Setlike[_T]) -> None: ...
  43      def __iand__(self: _SelfT, other: BaseSet[_T]) -> _SelfT: ...
  44      def intersection_update(self, other: _Setlike[Any]) -> None: ...
  45      def __ixor__(self: _SelfT, other: BaseSet[_T]) -> _SelfT: ...
  46      def symmetric_difference_update(self, other: _Setlike[_T]) -> None: ...
  47      def __isub__(self: _SelfT, other: BaseSet[_T]) -> _SelfT: ...
  48      def difference_update(self, other: _Setlike[Any]) -> None: ...
  49      def update(self, iterable: _Setlike[_T]) -> None: ...
  50      def clear(self) -> None: ...
  51      def add(self, element: _T) -> None: ...
  52      def remove(self, element: _T) -> None: ...
  53      def discard(self, element: _T) -> None: ...
  54      def pop(self) -> _T: ...
  55      def __as_immutable__(self) -> ImmutableSet[_T]: ...
  56      def __as_temporarily_immutable__(self) -> _TemporarilyImmutableSet[_T]: ...
  57  
  58  class _TemporarilyImmutableSet(BaseSet[_T]):
  59      def __init__(self, set: BaseSet[_T]) -> None: ...
  60      def __hash__(self) -> int: ...
  61