python3 sorted(t, key=lambda x:x[0])排序问题

python3 C = [('e', 4, 2), ('a', 2, 1), ('c', 5, 4), ('b', 3, 3), ('d', 1, 5)] print(sorted(C, key=lambda y: y[0])) #输出[('a', 2, 1), ('b', 3, 3), ('c', 5, 4), ('d', 1, 5), ('e', 4, 2)] print(sorted(C,

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