from __future__ import print_function

import types
import typing
import unittest
from collections.abc import Callable, ItemsView, Iterable, KeysView, Mapping, ValuesView
from re import Pattern
from typing import Any, AnyStr, NoReturn, TypeVar, overload

# Exports

_T = TypeVar("_T")
_K = TypeVar("_K")
_V = TypeVar("_V")

# TODO make constant, then move this stub to 2and3
# https://github.com/python/typeshed/issues/17
PY2 = False
PY3 = True
PY34: bool = ...

string_types = (str,)
integer_types = (int,)
class_types = (type,)
text_type = str
binary_type = bytes

MAXSIZE: int = ...

# def add_move
# def remove_move

def callable(obj: object) -> bool: ...
def get_unbound_function(unbound: types.FunctionType) -> types.FunctionType: ...
def create_bound_method(func: types.FunctionType, obj: object) -> types.MethodType: ...
def create_unbound_method(
    func: types.FunctionType, cls: type
) -> types.FunctionType: ...

Iterator = object

def get_method_function(meth: types.MethodType) -> types.FunctionType: ...
def get_method_self(meth: types.MethodType) -> object | None: ...
def get_function_closure(
    fun: types.FunctionType,
) -> tuple[types._Cell, ...] | None: ...  # pyright: ignore[reportAttributeAccessIssue]
def get_function_code(fun: types.FunctionType) -> types.CodeType: ...
def get_function_defaults(fun: types.FunctionType) -> tuple[Any, ...] | None: ...
def get_function_globals(fun: types.FunctionType) -> dict[str, Any]: ...
def iterkeys(d: Mapping[_K, object]) -> typing.Iterator[_K]: ...
def itervalues(d: Mapping[object, _V]) -> typing.Iterator[_V]: ...
def iteritems(d: Mapping[_K, _V]) -> typing.Iterator[tuple[_K, _V]]: ...

# def iterlists

def viewkeys(d: Mapping[_K, object]) -> KeysView[_K]: ...
def viewvalues(d: Mapping[object, _V]) -> ValuesView[_V]: ...
def viewitems(d: Mapping[_K, _V]) -> ItemsView[_K, _V]: ...
def b(s: str) -> binary_type: ...
def u(s: str) -> text_type: ...

unichr = chr

def int2byte(i: int) -> bytes: ...
def byte2int(bs: binary_type) -> int: ...
def indexbytes(buf: binary_type, i: int) -> int: ...
def iterbytes(buf: binary_type) -> typing.Iterator[int]: ...
def assertCountEqual(
    self: unittest.TestCase,
    first: Iterable[_T],
    second: Iterable[_T],
    msg: str | None = ...,
) -> None: ...
@overload
def assertRaisesRegex(self: unittest.TestCase, msg: str | None = ...) -> Any: ...
@overload
def assertRaisesRegex(
    self: unittest.TestCase, callable_obj: Callable[..., Any], *args: Any, **kwargs: Any
) -> Any: ...
def assertRegex(
    self: unittest.TestCase,
    text: AnyStr,
    expected_regex: AnyStr | Pattern[AnyStr],
    msg: str | None = ...,
) -> None: ...

exec_ = exec

def reraise(
    tp: type[BaseException] | None,
    value: BaseException | None,
    tb: types.TracebackType | None = ...,
) -> NoReturn: ...
def raise_from(
    value: BaseException | type[BaseException],
    from_value: BaseException | None,
) -> NoReturn: ...

print_ = print

def with_metaclass(meta: type, *bases: type) -> type: ...
def add_metaclass(metaclass: type) -> Callable[[_T], _T]: ...
def ensure_binary(s: bytes | str, encoding: str = ..., errors: str = ...) -> bytes: ...
def ensure_str(s: bytes | str, encoding: str = ..., errors: str = ...) -> str: ...
def ensure_text(s: bytes | str, encoding: str = ..., errors: str = ...) -> str: ...
def python_2_unicode_compatible(klass: _T) -> _T: ...
