python3操作mysql資料庫增刪改查
阿新 • • 發佈:2019-01-03
python3.x 使用pymysql操作mysql,python2.x使用mysqldb操作mysql
執行結果#!/usr/bin/python3 import pymysql import types db=pymysql.connect("localhost","root","123456","python"); cursor=db.cursor() #建立user表 cursor.execute("drop table if exists user") sql="""CREATE TABLE IF NOT EXISTS `user` ( `id` int(11) NOT NULL AUTO_INCREMENT, `name` varchar(255) NOT NULL, `age` int(11) NOT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=0""" cursor.execute(sql) #user插入資料 sql="""INSERT INTO `user` (`name`, `age`) VALUES ('test1', 1), ('test2', 2), ('test3', 3), ('test4', 4), ('test5', 5), ('test6', 6);""" try: # 執行sql語句 cursor.execute(sql) # 提交到資料庫執行 db.commit() except: # 如果發生錯誤則回滾 db.rollback() #更新 id=1 sql="update user set age=100 where id='%s'" % (id) try: cursor.execute(sql) db.commit() except: db.rollback() #刪除 id=2 sql="delete from user where id='%s'" % (id) try: cursor.execute(sql) db.commit() except: db.rollback() #查詢 cursor.execute("select * from user") results=cursor.fetchall() for row in results: name=row[0] age=row[1] #print(type(row[1])) #列印變數型別 <class 'str'> print ("name=%s,age=%s" % \ (age, name))
[[email protected] pythonCode]# python3 test.py
name=test1,age=1
name=test3,age=3
name=test4,age=4
name=test5,age=5
name=test6,age=6