typing library python code example
Example 1: python typing list of strings
from typing import List
def my_func(l: List[int]):
pass
Example 2: typing python
from collections.abc import Iterable
def zero_all_vars(vars: Iterable[LoggedVar[int]]) -> None:
for var in vars:
var.set(0)
Example 3: python type hint list
x: List[int] = [1]
x: Set[int] = {6, 7}
x: int = 1
x: float = 1.0
x: bool = True
x: str = "test"
x: bytes = b"test"
Example 4: python optional type annotation
from custom_module import SomeClass
from typing import Optional
class SubClass:
a_reference: Optional[SomeClass]
def __init__(self):
self.a_reference = None
Example 5: python typing module list
"""
typing.Tuple and typing.List are Generic types; this means you can specify what type their contents must be:
"""
def f(points: Tuple[float, float]):
return map(do_stuff, points)