from typing import Union
class str:
def __init__(self, arg: Union[int, float, complex, bool, str]) -> str: pass
def __add__(self, other: Union[int, float, complex, bool, str]) -> str: pass
def __str__(self) -> str: pass
def __eq__(self, other: str) -> bool: pass
def __iter__(self) -> str_iterator: pass
def __getitem__(self, item: int) -> str: pass
def is_digit(self) -> bool: pass
class str_iterator(str):
def __init__(self): pass
def __next__(self) -> str: pass