摘要： for i in range(1, 10): for j in range(i): print(j + 1, '*', i, end=' ') print('') 结果为 1 * 1 1 * 2 2 * 2 1 * 3 2 * 3 3 * 3 1 * 4 2 * 4 3 * 4 4 * 4 1 * 阅读全文

摘要： 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), (' 阅读全文