pipinstallmysql-connector-python 安装后,使用以下代码连接到MySQL: importosfrom dotenv import load_dotenv from mysql.connector import Error import mysql.connector load_dotenv() connection = mysql.connector.connect( host=os.getenv("HOST"), database=os.getenv("DATABASE"), user=os.getenv("USERNAME")...
Python连接mysql数据库 查询 importpymysqlif__name__ =='__main__':# 创建连接对象con = pymysql.connect(host="localhost", port=3306, user="xxxx", password="xxxx", database="db1", charset="utf8")# 获取游标cur = con.cursor()# sql 语句sql ='select * from student;'# 执行cur.execute...
importmysql.connectorfrommysql.connectorimportErrordefcreate_connection():"""创建与MySQL数据库的连接"""connection=Nonetry:connection=mysql.connector.connect(host='localhost',# 数据库服务器地址user='your_username',# 数据库用户名password='your_password',# 数据库密码database='mydatabase'# 想要连接的数...
$ gunzip MySQL-python-1.2.2.tar.gz $ tar -xvf MySQL-python-1.2.2.tar $ cd MySQL-python-1.2.2 $ python setup.py build $ python setup.py install注意:请确保您有root权限来安装上述模块。数据库连接连接数据库前,请先确认以下事项:您已经创建了数据库 TESTDB. 在TESTDB数据库中您已经创建了表 ...
[0].value # 连接MySQL数据库 db = mysql.connector.connect( host="localhost", user="yourusername", password="yourpassword", database="yourdatabase" ) cursor = db.cursor() # 插入数据到MySQL sql = "INSERT INTO barcodes (value) VALUES (%s)" val = (barcode_value,) cursor.execute(sql, ...
self._conn = pymysql.connect(host=host, port=port, user=user, passwd=pwd, db=database, charset=charset) self._cur = self._conn.cursor() @classmethod def get_instance(cls): """ get a class instance just only one. :return:the class instance ...
该代码将导入 mysql.connector 库,并使用connect()函数连接到灵活服务器,使用配置集合中的参数。 该代码对连接使用游标,并通过cursor.execute()方法对 MySQL 数据库执行 SQL 查询。 Windows 命令提示符 import mysql.connector from mysql.connector import errorcode # Obtain connection string information from the po...
Python-MySQL资格最老,核心由C语言打造,接口精炼,性能最棒,缺点是环境依赖较多,安装复杂,近两年已停止更新,只支持Python2,不支持Python3。 PyMySQL为替代Python-MySQL而生,纯python打造,接口与Python-MySQL兼容,安装方便,支持Python3。 SQLAlchemy是一个ORM框架,它并不提供底层的数据库操作,而是要借助于MySQLdb、PyMy...
connect_database() sql="SELECT count(*) FROM status" val=() global mycursor mycursor.execute(sql,val) myresult=mycursor.fetchone() print("\nRecord count: ", myresult[0]) except mysql.connector.Error as q: print("["+datetime.datetime.now().strftime("%a %b %d, %Y %I:%M:%S %p...
To handle connection errors, use the try statement and catch all errors using the errors.Error exception: import mysql.connector from mysql.connector import errorcode try: cnx = mysql.connector.connect(user='scott', database='employ') except mysql.connector.Error as err: if err.errno == ...