MySQLdb.connect()怎么传一个字典进去,为什么我按下面的代码传,无法连接 - V2EX
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scott123
V2EX    Python

MySQLdb.connect()怎么传一个字典进去,为什么我按下面的代码传,无法连接

  •  
  •   scott123 2016-01-09 21:15:44 +08:00 3712 次点击
    这是一个创建于 3571 天前的主题,其中的信息可能已经有所发展或是发生改变。

    db_dict=dict(host="127.0.0.1",user="root",passwd="test",db="test1")
    def insert_one_data(self,sql,*params):
    try:
    cOnn=MySQLdb.connect(db_dict)
    cur=conn.cursor()
    cur.execute("INSERT INTO admininfo(username,passwd) VALUES(%s,%s)",params)
    conn.commit
    except MySQLdb.Error,e:
    print e
    sys.exit(1)
    finally:
    if conn:
    cur.close()
    conn.close()

    6 条回复    2016-01-09 22:40:20 +08:00
    neoblackcap
        1
    neoblackcap  
       2016-01-09 21:44:40 +08:00
    cur.execute("INSERT INTO admininfo(username,passwd) VALUES(%s,%s)",*params)试试
    scott123
        2
    scott123  
    OP
       2016-01-09 21:55:02 +08:00
    我的主要问题是我要使用 db_dict 作为参数连接到数据库,而不是使用以下的 code
    cOnn=MySQLdb.connect("127.0.0.1","root","test","test1")
    那么以后我只要修改 db_dict 这个参数就可以连接到不同当数据库了,我见到过别人这么实用过,但是我怎么搜索也是找不到
    Zzzzzzzzz
        3
    Zzzzzzzzz  
       2016-01-09 21:56:24 +08:00   1
    MySQLdb.connect(**db_dict)
    neoblackcap
        4
    neoblackcap  
       2016-01-09 22:17:38 +08:00
    @scott123 支持三楼,刚才急着上厕所,没细看
    scott123
        5
    scott123  
    OP
       2016-01-09 22:23:21 +08:00
    import MySQLdb
    db_dict=dict(host="127.0.0.1",user="root",passwd="dushibing555",db="test1")
    cOnn=MySQLdb.connect(**db_dict)
    cur=conn.cursor(cursorclass=MySQLdb.cursors.DictCursor)
    cur.execute("SELECT passwd from admininfo WHERE username=%s",('jerry',))
    rows=cur.fetchall()
    print rows

    successfull!
    能解释一下吗?新手不太懂,我知道参数前加两个**代表是参数是字典,那么是不是说如果不加**号解释器无法识别它是一个字典,所以无法正确的解释参数。
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