Python作業- 求三個數中的最大值

def max_num_compare(n1, n2):
    if n1 > n2:
        return n1
    else:
        return n2


def max_num(n1, n2, n3):
    m = max_num_compare(n1, n2)
    if m > n3:
        return m
    else:
        return n3


if __name__ == "__main__":
    maxNumber = max_num(1, 2, 3)
    print(maxNumber)