Type Hint for Basic Types

Recipes

NOTE: typing.List, typing.Dict, typing.Tuple, typing.Set, typing.FrozenSet are deprecated since Python 3.9, using standard types instead. See PEP 585

i: int = 1

s: str  # no initial value!

l: list[int] = []  # a list of integers

t1: tuple[int, str] = (0, 'a') # a tuple of (int, str)
t2: tuple[int, ...]  # a tuple of integers with any size

from typing import ItemsView
d: dict[int, str] = {1: '1'}
d.items() -> ItemsView[int, str]: ...

s: set[int] = set()  # a set of integers

b: bool = True

f: float = 1.5  # int or float

def func(arg: int) -> int: ...

More Details

References