MySQL with Python: Complete Guide

In Python, you can interact with MySQL databases using either the official mysql-connector-python library or the third-party library pymysql.

“Here is an example using the mysql-connector-python library to demonstrate how to manipulate a MySQL database.”

1. To install the mysql-connector-python library, simply run ‘pip install mysql-connector-python’ in the command line.
2. Import the mysql.connector module.
3. Establish database connection:

import mysql.connector

# 建立数据库连接
cnx = mysql.connector.connect(
    host="localhost",
    user="username",
    password="password",
    database="database_name"
)

The host is the address of the MySQL server, the user is the username, the password is the password, and the database is the name of the database.

1. Create a cursor object:

cursor = cnx.cursor()

1. Execute SQL statement.

# 查询数据
query = "SELECT * FROM table_name"
cursor.execute(query)

# 插入数据
insert_query = "INSERT INTO table_name (column1, column2) VALUES (%s, %s)"
data = ("value1", "value2")
cursor.execute(insert_query, data)

# 更新数据
update_query = "UPDATE table_name SET column1 = %s WHERE column2 = %s"
data = ("new_value", "condition_value")
cursor.execute(update_query, data)

# 删除数据
delete_query = "DELETE FROM table_name WHERE condition_column = %s"
data = ("condition_value",)
cursor.execute(delete_query, data)

1. “Submit transaction:”

cnx.commit()

1. Close the cursor and the database connection.

cursor.close()
cnx.close()

The above are the basic steps for using the mysql-connector-python library to operate a MySQL database in Python.