# !/usr/bin/python3
# -*-coding:UTF-8-*-
# FileName: func_product.py

def product(*args):
    '''接收一个或多个数并计算乘积'''
    sum = 1
    if len(args) == 0:
        raise TypeError('参数不能为空, 否则没有意义!')
    for i,v in enumerate(args):
        if not isinstance(v,(int,float)):
            raise TypeError('参数不是int 或 float 类型。')
        sum *= v

    return sum

if __name__ == '__main__':
    # 测试
    print('product(5) =', product(5))
    print('product(5.5, 6) =', product(5.5, 6))
    print('product(5, 6, 7) =', product(5, 6, 7))
    print('product(5, 6, 7, 9) =', product(5, 6, 7, 9))
    if product(5.0) != 5.0:
        print('product(5)测试失败!')
    elif product(5, 6) != 30:
        print('product(5, 6)测试失败!')
    elif product(5, 6, 7) != 210:
        print('product(5, 6, 7)测试失败!')
    elif product(5, 6, 7, 9) != 1890:
        print('product(5, 6, 7, 9)测试失败!')
    else:
        try:
            product()
            print('空参数测试失败!')
        except TypeError:
            print('空参数测试成功!')
            
        try:
            product('a')
            print('参数类型测试失败!')
        except TypeError:
            print('参数类型测试成功!')

product(5) = 5

product(5.5, 6) = 33.0

product(5, 6, 7) = 210

product(5, 6, 7, 9) = 1890

空参数测试成功!

参数类型测试成功!