import math


def distance(v1, v2):
    """
    Distance between vectors v1 and v2
    Args:
        v1 (list): vector 1
        v2 (list): vector 2

    Returns:
        Distance between the vectors
    """
    v1_v2 = [v2[0] - v1[0], v2[1] - v1[1], v2[2] - v1[2]]
    return math.sqrt(v1_v2[0]*v1_v2[0] + v1_v2[1]*v1_v2[1] + v1_v2[2]*v1_v2[2])