Python3数据库操作包pymysql的操作方法

CREATE TABLE `test` (
 `id` int(10) NOT NULL AUTO_INCREMENT,
 `name` varchar(20) DEFAULT NULL,
 `age` int(10) DEFAULT NULL,
 PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

import pandas as pd
import datetime
import pymysql
#创建连接
conn = pymysql.connect(host='127.0.0.1', port=3306, user='root', 
            passwd='******', db='testdataset', charset='utf8')#passwd是本地mysql服务器密码
conn
#Output:<pymysql.connections.Connection at 0x11443e588>
#创建游标
cursor = conn.cursor()
cursor
#Output:<pymysql.cursors.Cursor at 0x11443e2e8>
#执行SQL，并返回受影响行数
effect_row = cursor.execute("select * from test")
effect_row
#Output:4
#获取剩余结果的第一行数据
r1=cursor.fetchone()
r1
#Output:(1, '李明', 18)
name='王天'
age=17
sql="select name,age from test where name='%s' and age='%s'" % (name,age)
row_count=cursor.execute(sql) 
row_1 = cursor.fetchone()
print(row_count,row_1)
#Output:1 ('王天', 17)
conn.commit()
cursor.close()
conn.close()