add mysql sample

Author: michaelliao

py3/db/do_mysql.py

@@ -0,0 +1,31 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+########## prepare ##########
+
+# install mysql-connector-python:
+# pip3 install mysql-connector-python --allow-external mysql-connector-python
+
+import mysql.connector
+
+# change root password to yours:
+conn = mysql.connector.connect(user='root', password='password', database='test')
+
+cursor = conn.cursor()
+# 创建user表:
+cursor.execute('create table user (id varchar(20) primary key, name varchar(20))')
+# 插入一行记录，注意MySQL的占位符是%s:
+cursor.execute('insert into user (id, name) values (%s, %s)', ('1', 'Michael'))
+print('rowcount =', cursor.rowcount)
+# 提交事务:
+conn.commit()
+cursor.close()
+
+# 运行查询:
+cursor = conn.cursor()
+cursor.execute('select * from user where id = %s', ('1',))
+values = cursor.fetchall()
+print(values)
+# 关闭Cursor和Connection:
+cursor.close()
+conn.close()