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  • Python 操作 Mysql 模块

    一、Python 操作 Mysql 模块的安装

    linux:
        yum install MySQL-python
     
    window:
        http://files.cnblogs.com/files/wupeiqi/py-mysql-win.zip
    

    二、Python MySQL API 

    2.1、插入数据

    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
    

     2.2、批量插入数据

    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
    

     注意:cur.lastrowid

    2.3、删除数据

    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
    

    2.4、修改数据

    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
    

    2.5、查数据

    # ############################## 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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  • 原文地址:https://www.cnblogs.com/zhangqigao/p/7685635.html
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