1、通过pymysql连接数据库并进行数据库操作
2、查询数据
3、更新修改SQL方法封装

import pymysql.cursors
import json

class OperationMysql:
def __init__(self):
self.conn = pymysql.connect(
host='127.0.0.1',
port=3306,
user='test',
passwd='11111',
db='test',

charset='utf8',
cursorclass=pymysql.cursors.DictCursor
)
self.cur = self.conn.cursor()

# 查询一条数据
def search_one(self, sql):
self.cur.execute(sql)
result = self.cur.fetchone()
return result

# 更新SQL
def updata_one(self, sql):
self.cur.execute(sql)
self.conn.commit()
self.conn.close()

if __name__ == '__main__':
op_mysql = OperationMysql()
res = op_mysql.search_one("SELECT * from order WHERE order_no='M191023401681654'")
print(res)

来源:CesareCheung