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函数函数的参数位置参数默认参数可变参数(传入tuple)def calc(numbers): sum = 0 for n in numbers: sum = sum + n * n return sum我们把函数的参数改为可变参数：def calc(*numbers): sum = 0 for n in numbers: sum = sum + n * n return sum定义可变参数和定义一个list或

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