用Python连接MySQL并进行CRUD

• Z时代
• 2024-01-10
• 分类：综合

准备条件

1. Python 2.7
2. MySQL 5.5
3. 安装 PyMySQL pip install PyMySQL

放码过来

创建一数据表

CREATE TABLE `users` (
    `id` int(11) NOT NULL AUTO_INCREMENT,
    `email` varchar(255) COLLATE utf8_bin NOT NULL,
    `password` varchar(255) COLLATE utf8_bin NOT NULL,
    PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin
AUTO_INCREMENT=1 ;

连接数据库并进行CRUD操作

python">import pymysql.cursors
# Connect to the database
connection = pymysql.connect(host="localhost",
                             user="user",
                             password="passwd",
                             db="db",
                             charset="utf8mb4",
                             cursorclass=pymysql.cursors.DictCursor)
try:
    with connection.cursor() as cursor:
        # Create a new record
        sql = "INSERT INTO `users` (`email`, `password`) VALUES (%s, %s)"
        cursor.execute(sql, ("abc@163.org", "123456"))
    # connection is not autocommit by default. So you must commit to save
    # your changes.
    connection.commit()
    with connection.cursor() as cursor:
        # Read a single record
        sql = "SELECT `id`, `password` FROM `users` WHERE `email`=%s"
        cursor.execute(sql, ("abc@163.org",))
        result = cursor.fetchone()
        print(result)
finally:
    connection.close()

参考资料

1. PyMySQL · PyPI
2. Welcome to PyMySQL’s documentation

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