import math


def distance(point1, point2):
    """ Calculate the distance between two points
    """
    (x1,y1) = [float(d) for d in point1]
    (x2,y2) = [float(d) for d in point2]
    dx = abs(x1 - x2)
    dy = abs(y1 - y2)
    return math.sqrt(dx**2 + dy**2)