Python操作MySQL

安装第三方库pymysql（设置->项目内的python解释器_>+）
1、获取连接对象

from pymysql import Connection

#构建到MySQL数据库的连接
conn = Connection(
    host = "localhost",
    port = 3306,
    user = "root",
    password = "****",
    autocommit=True#修改操作自动提交，否则需要加conn.commit()
)
#关闭连接
conn.close()

2、执行SQL查询

#获取游标对象
cursor = conn.cursor()
#选择数据库
conn.select_db("test")
#执行非查询性质SQL
# cursor.execute("create table test_pymysql(id int);")
#执行查询性质SQL
cursor.execute("SELECT * FROM student")
#获取查询结果
results: tuple = cursor.fetchall() #fetchall——获取所有
for r in results:
    print(r)

完成代码如下

"""
演示Python pymysql库的基础操作
"""
from pymysql import Connection

#构建到MySQL数据库的连接
conn = Connection(
    host = "localhost",
    port = 3306,
    user = "root",
    password = "0000",
    autocommit=True
)
#关闭连接
conn.close()

# print(conn.get_server_info())

#获取游标对象
cursor = conn.cursor()
#选择数据库
conn.select_db("test")
#执行非查询性质SQL
# cursor.execute("create table test_pymysql(id int);")
#执行查询性质SQL
cursor.execute("SELECT * FROM student")
#获取查询结果
results: tuple = cursor.fetchall() #fetchall——获取所有
for r in results:
    print(r)
#关闭连接
conn.close()

注：查看mysql版本，同时也可作为测试是否连接成功语句

print(conn.get_server_info())