Python sorted函数

主要是sorted对list（包含元素值是tuple）、字典排序，因为sorted是内置函数，所以不需要导入包

if __name__ == "__main__":
    a = [5, 7, 6, 3, 4, 1, 2]
    b = sorted(a)  # [5, 7, 6, 3, 4, 1, 2]

    a = [('a', 5), ('a', 2), ('c', 3), ('d', 4)]
    
    b = sorted(a, key=lambda x: (x[0], x[1]))
    # 先按x[0]排序，而后再按x[1]排序, [('a', 2), ('a', 5), ('c', 3), ('d', 4)]

    b = sorted(a, key=lambda x: (x[0], x[1]), reverse=True)
    # 逆序[('d', 4), ('c', 3), ('a', 5), ('a', 2)]

    dic = {"ok": 3, "no": 2, "lizi": 10, "A": 13}   
    res = sorted(dic.items(), key=lambda d: d[0])
    # 返回的是list，每个值是tuple， [('A', 13), ('lizi', 10), ('no', 2), ('ok', 3)]
    
    res = sorted(dic.items(), key=lambda d: d[1])
    # [('no', 2), ('ok', 3), ('lizi', 10), ('A', 13)]