db='demo_temp', charset='utf8', cursorclass=pymysql.cursors.DictCursor ) print(connect.open)# 打印数据库连接状态connect.close()# 关闭数据库连接connect.ping(reconnect=True)# 重新连接数据库print(connect.open)# 打印数据库连接状态 下面的小动画向我们展示了当connect断开连接后,使用connect.ping(reconn...
database='evdata'):#打开csv文件file=open(csv_file_path,'r',encoding='utf-8')#读取csv文件第...
An ORM doesn't need to hide the "R". A relational database provides rich, set-based functionality that should be fully exposed. SQLAlchemy's ORM provides an open-ended set of patterns that allow a developer to construct a custom mediation layer between a domain model and a relational schem...
httpRequest.open('POST', 'http://127.0.0.1:8000/myapp/addr/' + id); httpRequest.onreadystatechange = function() { if (httpRequest.readyState == 4) { // The request is complete var JSONtext = httpRequest.responseText; var myArray = eval('(' + JSONtext + ')'); // beware security...
open("seleniumbase.io/simple/login") driver.type("#username", "demo_user") driver.type("#password", "secret_pass") driver.click('a:contains("Sign in")') driver.assert_exact_text("Welcome!", "h1") driver.assert_element("img#image1") driver.highlight("#image1") driver.click_link(...
装饰器充分体现了软件工程中的开闭原则(Open/Closed Principle),即软件实体应当对扩展开放,对修改关闭。使用装饰器,我们可以在不修改现有代码的基础上轻松扩展功能,降低了耦合度,增强了软件的适应性和稳定性。此外,装饰器还能协助实现诸如AOP(面向切面编程)等高级编程范式,使我们能够集中处理那些跨越多个模块和层级的横切...
数据保存(本地文件、数据库) with open('F:/img/' + cname + '-' + skin_name[skin_num - 1] + '.jpg', mode='wb') as f: print('正在下载皮肤:', cname + '-' + skin_name[skin_num - 1]) f.write(skin_data) end_time = time.time() print('花费时间(秒):', int(end_time ...
username='username',password='password')# 创建 SSH 隧道ssh_transport=ssh.get_transport()local_bind_port=3306remote_bind_port=3306ssh_channel=ssh_transport.open_channel("direct-tcpip",("localhost",local_bind_port),("localhost",remote_bind_port))# 连接到远程数据库db_host='localhost'db_port=...
# # return self._pool.connection() # def execut(self, sql, param=()): # count = self._cursor.execute(sql, param) # return count 参考1:普通数据库连接 对比 数据库连接池 不用数据库连接池的写法: import MySQLdb conn= MySQLdb.connect(host='localhost',user='root',passwd='pwd',db='myD...
Create socket connection to the device For example # minitouch: https://github.com/openstf/minitouchc=d.create_connection("unix","minitouch")print(c.recv(500))c.close() c=d.create_connection("tcp",7912)# the second argument must be intc.send(b"GET / HTTP/1.1\r\nHost: localhost\r\...