from typing import Iterable, MutableSequence, TypeVar, Union, overload

_T = TypeVar("_T")
_ULT = TypeVar("_ULT", bound=UserList)

class UserList(MutableSequence[_T]):
    def insert(self, index: int, object: _T) -> None: ...
    @overload
    def __setitem__(self, i: int, o: _T) -> None: ...
    @overload
    def __setitem__(self, s: slice, o: Iterable[_T]) -> None: ...
    def __delitem__(self, i: Union[int, slice]) -> None: ...
    def __len__(self) -> int: ...
    @overload
    def __getitem__(self, i: int) -> _T: ...
    @overload
    def __getitem__(self: _ULT, s: slice) -> _ULT: ...
    def sort(self) -> None: ...