摘要: mysql的备份和恢复 >>> mysqldump -uroot -p stu > stu.sql >>> mysqldump -uroot -p stu < stu.sql 阅读全文
posted @ 2021-01-20 22:55 ty1539 阅读(59) 评论(0) 推荐(0)
摘要: 1. 生成列表的费时对比 #_*_coding:utf-8_*_ from timeit import Timer def test1(): li =[] for i in range(10000): li.append(i) def test2(): li = [] for i in range( 阅读全文
posted @ 2021-01-20 22:51 ty1539 阅读(105) 评论(0) 推荐(0)