python连接mysql之pymysql模块
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以下demo均以python2中的mysqldb模块
一、插入数据
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import MySQLdb conn = MySQLdb.connect(host = \'127.0.0.1\' ,user = \'root\' ,passwd = \'1234\' ,db = \'mydb\' ) cur = conn.cursor() reCount = cur.execute( \'insert into UserInfo(Name,Address) values(%s,%s)\' ,( \'alex\' , \'usa\' )) # reCount = cur.execute(\'insert into UserInfo(Name,Address) values(%(id)s, %(name)s)\',{\'id\':12345,\'name\':\'wupeiqi\'}) conn.commit() cur.close() conn.close() print reCount |
import MySQLdb conn = MySQLdb.connect(host=\'127.0.0.1\',user=\'root\',passwd=\'1234\',db=\'mydb\') cur = conn.cursor() li =[ (\'alex\',\'usa\'), (\'sb\',\'usa\'), ] reCount = cur.executemany(\'insert into UserInfo(Name,Address) values(%s,%s)\',li) conn.commit() cur.close() conn.close() print reCount 批量插入数据
二、删除数据
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import MySQLdb conn = MySQLdb.connect(host = \'127.0.0.1\' ,user = \'root\' ,passwd = \'1234\' ,db = \'mydb\' ) cur = conn.cursor() reCount = cur.execute( \'delete from UserInfo\' ) conn.commit() cur.close() conn.close() print reCount |
三、修改数据
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import MySQLdb conn = MySQLdb.connect(host = \'127.0.0.1\' ,user = \'root\' ,passwd = \'1234\' ,db = \'mydb\' ) cur = conn.cursor() reCount = cur.execute( \'update UserInfo set Name = %s\' ,( \'alin\' ,)) conn.commit() cur.close() conn.close() print reCount |
四、查数据
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# ############################## fetchone/fetchmany(num) ############################## import MySQLdb conn = MySQLdb.connect(host = \'127.0.0.1\' ,user = \'root\' ,passwd = \'1234\' ,db = \'mydb\' ) cur = conn.cursor() reCount = cur.execute( \'select * from UserInfo\' ) print cur.fetchone() print cur.fetchone() cur.scroll( - 1 ,mode = \'relative\' ) print cur.fetchone() print cur.fetchone() cur.scroll( 0 ,mode = \'absolute\' ) print cur.fetchone() print cur.fetchone() cur.close() conn.close() print reCount # ############################## fetchall ############################## import MySQLdb conn = MySQLdb.connect(host = \'127.0.0.1\' ,user = \'root\' ,passwd = \'1234\' ,db = \'mydb\' ) #cur = conn.cursor(cursorclass = MySQLdb.cursors.DictCursor) cur = conn.cursor() reCount = cur.execute( \'select Name,Address from UserInfo\' ) nRet = cur.fetchall() cur.close() conn.close() print reCount print nRet for i in nRet: print i[ 0 ],i[ 1 ] |
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