distanta dintre doua puncte

import math
def citire():
    x=int(input("Introdu coordonata x:"))
    y=int(input("Introdu coodonata y:"))
    p=(x,y)
    return p
def distanta(a,b):
    distanta = math.sqrt ((a[0]-a[1] ** b[0]-b[1]) ** 2)
    return distanta

a=citire()
print(a)
b=citire()
print(b)

x=distanta(a,b)
print(x)