Point objects have x and y attributes (X and Y in C#) attributes. Write a function calculating distance between Point a and Point b. Tests round answers to 6 decimal places.

import math

class Point(object):
    def __init__(self, x=0, y=0):
        self.x = x
        self.y = y

# TODO Write a function calculating distance between Point a and Point b.
def distance(a, b):
    c = math.sqrt((a.x - b.x)**2 + (a.y - b.y)**2)
    return c
    
a = Point(1,1)
b = Point(1,2)

print(distance(a,b))