python typing multiple types code example

Example 1: python typing list of strings

from typing import List

def my_func(l: List[int]):
    pass

Example 2: typing multiple types

from typing import Union


def foo(client_id: str) -> Union[list,bool]

Example 3: python type hint list

# For collections, the name of the type is capitalized, and the
# name of the type inside the collection is in brackets
x: List[int] = [1]
x: Set[int] = {6, 7}
  
# For simple built-in types, just use the name of the type
x: int = 1
x: float = 1.0
x: bool = True
x: str = "test"
x: bytes = b"test"

Example 4: type declaration python

def greeting(name: str) -> str:
    return 'Hello ' + name

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