Python3 函数计算列表元素总和
def sum_of_lists(): a = [1] b = [2, 3] c = [] d = [5, 6, 7] sum_a = sum(a) sum_b = sum(b) sum_c = sum(c) sum_d = sum(d) return sum_a, sum_b, sum_c, sum_d
print(sum_of_lists()) # 输出 (1, 5, 0, 18)
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