Source File: db.py From django-htk with MIT License 6 votes def close_connection(): """Closes the connection if we are not in an atomic block. The connection should never be closed if we are in an atomic block, as happens when running tests as part of a django TestCase. Otherwise...
PyMySQL 是一个纯 Python 实现的 MySQL 客户端,便于 Python 程序访问 MySQL 数据库。通过 PyMySQL,我们可以连接数据库、执行 SQL 查询以及获取结果。 importpymysql# 连接数据库connection=pymysql.connect(host='localhost',user='user',password='password',db='database')# 创建游标并执行SQLcursor=connection.c...
@summary: 静态方法,从连接池中取出连接 @return MySQLdb.connection """ if Mysql.__pool is None: __pool = PooledDB(creator=MySQLdb, mincached=0, maxcached=1, host=setting.host, port=setting.port, user=setting.user, passwd=setting.password, db=setting.database, use_unicode=False, charset=...
A、CONNECTION.CLOSE()表示关闭数据库连接 B、CONNECTION.TOTAL_CHANGES()表示返回自数据库连接打开以来被修改、插入或删除的数据库总行数 C、CURSOR.EXECUTE(SQL[,OPTIONALPARAMETERS])表示执行一个SQL语句。该SQL语句可以被参数化 D、CONNECTION.CURSOR([CURSORCLASS])表示创建一个CONNECT,将在PYTHON数据库编程中用到 ...
Connect to a local SQL Server db with sequelize Having completed the SQL Server installer, the given connection string is Server=localhost\MSSQLSERVER01;Database=master;Trusted_Connection=True;, which seems like a strange format, and if I try to co... ...
MySQLConnection.cmd_init_db() Method MySQLConnection.cmd_ping() Method MySQLConnection.cmd_process_info() Method MySQLConnection.cmd_process_kill() Method MySQLConnection.cmd_query() Method MySQLConnection.cmd_query_iter() Method MySQLConnection.cmd_quit() Method MySQLConnection.cmd_refresh...
如下文代码所示,自定义 'Connection': 'keep-alive',通知服务器交互结束后,不断开连接,即所谓长连接。 代码语言:javascript 复制 1#测试8使用urllib2 测试Connection=keep-alive2importurllib23importcookielib456httpHandler=urllib2.HTTPHandler(debuglevel=1)7httpsHandler=urllib2.HTTPSHandler(debuglevel=1)8opener...
至于原因就是上面那一堆注释,大概意思是addinfourl这个类一旦启用长链接,可以读取到上次交互未读完的应答报文,为了防止此类情况,所以强制性将Connection写死成close。 def do_open(self, http_class, req, **http_conn_args): …… # We want to make an HTTP/1.1 request, but the addinfourl ...
An unhandled exception of type 'System.IO.IOException' occurred in TestSqlite.exe Additional information: 文件“G:\test.db”正由另一进程使用,因此该进程无法访问此文件。 异常。 原因是sqlite在执行SQLiteConnectionHandle.Dispose()操作时候,其实并没有真正的释放连接,只有显式调用 CLR垃圾回收之后才能真正释放...
But as I said before,redis.Redisis the way to go in 99.9% of cases. you dont need worry about it when you use ConnectionPool.look at the source code: defexecute_command(self, *args, **options):"Execute a command and return a parsed response"pool = self.connection_pool ...