# second.求积 from functools import reduce def prod(L): return reduce(lambda x, y: x * y, L) print('3 * 5 * 7 * 9 =', prod([3, 5, 7, 9])) if prod([3, 5, 7, 9]) == 945: print('测试成功!') else: print('测试失败!')
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