python怎么连接mysql数据库

pip install mysql-connector-python

import mysql.connector

# 创建数据库连接
cnx = mysql.connector.connect(
    host="your_host",
    user="your_username",
    password="your_password",
    database="your_database"
)

# 创建游标对象
cursor = cnx.cursor()

# 执行SQL查询
query = "SELECT * FROM your_table"
cursor.execute(query)

# 获取查询结果
for row in cursor.fetchall():
    print(row)

# 关闭游标和连接
cursor.close()
cnx.close()

pip install pymysql

import pymysql

# 创建数据库连接
conn = pymysql.connect(
    host="your_host",
    user="your_username",
    password="your_password",
    database="your_database"
)

# 创建游标对象
cursor = conn.cursor()

# 执行SQL查询
query = "SELECT * FROM your_table"
cursor.execute(query)

# 获取查询结果
for row in cursor.fetchall():
    print(row)

# 关闭游标和连接
cursor.close()
conn.close()