MySQL数据库连接重试功能和连接超时功能的DB连接Python实现

def reConndb(self):
    # 数据库连接重试功能和连接超时功能的DB连接
     _conn_status = True
     _max_retries_count = 10  # 设置最大重试次数
     _conn_retries_count = 0  # 初始重试次数
     _conn_timeout = 3  # 连接超时时间为3秒
     while _conn_status and _conn_retries_count <= _max_retries_count:
        try:
            print '连接数据库中..'
            conn = pymysql.connect(host=DB_HOST,  port=3306, user=DB_USER, passwd=DB_PASSWORD, db=DB_DATABASE, charset=DB_CHARSET, connect_timeout=_conn_timeout)
            _conn_status = False  # 如果conn成功则_status为设置为False则退出循环，返回db连接对象
 	    return conn
        except:
            _conn_retries_count += 1
 	    print _conn_retries_count
        print 'connect db is error!!'
        time.sleep(3)  # 此为测试看效果
 	continue