摘要：
1、时间上相邻query，前缀去重 输入：[(AB, 2019-12-25 12:11:23), (A, 2019-12-25 12:11:22), (ABC, 2019-12-25 12:11:22), (BCD, 2019-12-25 12:11:30), (B, 2019-12-25 12:1 阅读全文
摘要：
a = [{'name':'lilei','age':'18'},{'name':'tom','age':'18'},{'name':'lilei','age':'20'}] b= for item in a: b.setdefault(item['name'],{**item,}) b = lis 阅读全文