#其实把粘贴到代码运行框里执行，输出“测试成功”才算回答正确= =
def product(numbers): if len(numbers) <1: raise 'TypeError' else: sum = 1 for x in numbers: sum = sum x return sum
#注意第一行的numbers和倒数第二行的sum和x间有星号
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#其实把粘贴到代码运行框里执行，输出“测试成功”才算回答正确= =
def product(numbers): if len(numbers) <1: raise 'TypeError' else: sum = 1 for x in numbers: sum = sum x return sum
#注意第一行的numbers和倒数第二行的sum和x间有星号