1. 字典列表，按字典某个键值去重

def list_dict_set(dict_list, key_name):
    b = OrderedDict()
    for item in dict_list:
        b.setdefault(item[key_name], {**item, })
    b = list(b.values())
    return b

2. 字典列表，按字典某个键值排序

def list_dict_sort(dict_list, key_name):
    return sorted(dict_list, key=lambda dic: dic[key_name], reverse=True)