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别把酒留在杯里,别把话放在心里
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1. 基本事件<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initia...
1.获取元素<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial...
基本数据类型:1.数值:a = 18;2.字符串:https://www.w3school.com.cn/jsref/jsref_obj_string.asp a = 'soulchild' a.chartAt(索引位置) a.substring(起始位置,结束位置) a.length 获取字符串长度 a.indexOf('x') ...
1. 事务的基本介绍 1. 概念: * 如果一个包含多个步骤的业务操作,被事务管理,那么这些操作要么同时成功,要么同时失败。 2. 操作: 1. 开启事务: start transaction; 2. 回滚:rollback; 3. 提交:commit; 3. 例子: ...
-- 学生表 create table `student` ( `id` int unsigned PRIMARY KEY auto_increment, `name` char(32) not null unique, `sex` enum('男','女') not null, `city` char(32) not null, `description` text, `birthday...
from threading import Thread, Lock, RLock import time # 互斥锁死锁 # mutexA = Lock() # mutexB = Lock() # class MyThread(Thread): # def run(self): # self.f1() # self.f2() # # def...
# -*- coding: utf-8 -*- import paramiko # 通过用户名密码连接 # # 创建ssh客户端 # ssh_client = paramiko.SSHClient() # # 自动同意yes # ssh_client.set_missing_host_key_policy(paramiko.AutoAddPolicy) # # 建立连接 # ssh_cl...
配置文件cluster.name: test xpack.security.enabled: true discovery.type: single-node node.name: node1 path.data: /data/ path.logs: /usr/local/es/logs bootstrap.memory_lock: true network.host: 0.0.0.0 ht...
常用的标志位:re.M多行匹配re.S让.可以匹配换行符re.I忽略大小写使用多个标志位可以用or,|。例如re.search(r'xxx', s2, re.S|re.I)# # re.S:让"."可以匹配换行符 # s2 = "soul\nchild" # m5 = re.search(r'l.c', s2, re.S) # print(m5) # ...