Small example on Python Typing

python-typing.py

#!/usr/bin/env python3

def testing(a: int, b: int) -> int:
    return a + b

print(testing(1,2))

from typing import Dict
from mypy_extensions import TypedDict

TestDict = TypedDict(
    "TestDict",
    {
        "Key1": int,
        "Key2": str
    }
)

print(TestDict(
    Key1=1,Key2=2
))

"""
/tmp ⌚ 10:16:53
$ mypy test.py
test.py:20: error: Incompatible types (expression has type "int", TypedDict item "Key2" has type "str")
Found 1 error in 1 file (checked 1 source file)
"""