TypeError: ‘type’ object is not subscriptable

I’m trying to get the function below to run. However I’m getting an error saying

TypeError: ‘type’ object is not subscriptable 




def dist(loc1: tuple[float], loc2: tuple[float]) -> float:
    dx = loc1[0] - loc2[0]
    dy = loc1[1] - loc2[1]
    return (dx**2 + dy**2)**0.5

>Solution :

You need to use typing.Tuple, not the tuple class.

from typing import Tuple

def dist(loc1: Tuple[float], loc2: Tuple[float]) -> float:
    dx = loc1[0] - loc2[0]
    dy = loc1[1] - loc2[1]
    return (dx**2 + dy**2)**0.5
dist((1,2),(2,1)) # output 1.4142135623730951