Python Pythagorean Theorem - Distance

gistfile1.py

import math

# Pythagorean theorem
# a² + b² = c²

def distance(p, q):    
    return math.sqrt((p[0] - q[0])**2 + (p[1] - q[1])**2)
    
# >>> distance([200, 250], (300, 350))
# 141.4213562373095
# >>> distance([200, 250], (200, 250))
# 0.0
# >>> distance([200, 250], (200, 220))
# 30.0
# >>> distance([200, 250], (200, 260))
# 10.0