python操作mysql之增删改查

【insert】

 import MySQLdb

 conn = MySQLdb.connect("192.168.100.150","u01","","08day5" )
 cur = conn.cursor()

 #把数据放到元组
 sql = "insert into wang (id,name) values(%s,%s)"
 params = (3,'wangsuchen')

 cur.execute(sql,params)
 conn.commit() #提交

 cur.execute('select * from wang')
 print cur.fetchall() #必须在上一条execute命令执行后再执行这条，

 cur.close()
 conn.close()

【delete】

 import MySQLdb

 conn = MySQLdb.connect("192.168.100.150","u01","","08day5" )
 cur = conn.cursor()

 sql = "delete from wang where id = %s"
 params = (3)

 cur.execute(sql,params)
 conn.commit()

 cur.execute('select * from wang')
 print cur.fetchall()

 cur.close()
 conn.close()

【updata】

import MySQLdb

conn = MySQLdb.connect("192.168.100.150","u01","","08day5" )
cur = conn.cursor()

sql = "update wang set name = %s where id = %s"
params = ('chenying',2)

cur.execute(sql,params)
conn.commit()

cur.execute('select * from wang')
print cur.fetchall()

cur.close()
conn.close()

【select】

 import MySQLdb

 conn = MySQLdb.connect("192.168.100.150","u01","","08day5" )
 cur = conn.cursor()

 cur.execute('select * from wang')
 print cur.fetchall()

 cur.close()
 conn.close()