mysql返回1064_python mysql插入语句 返回1064

Traceback (most recent call last):

File "python_mysql.py", line 78, in

x.cb_model_add()

File "python_mysql.py", line 17, in cb_model_add

self.cursor.executemany(sql, params)

File "build/bdist.linux-x86_64/egg/MySQLdb/cursors.py", line 262, in executemany

File "build/bdist.linux-x86_64/egg/MySQLdb/cursors.py", line 354, in _query

File "build/bdist.linux-x86_64/egg/MySQLdb/cursors.py", line 318, in _do_query

_mysql_exceptions.ProgrammingError: (1064, "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ':code)' at line 2")

sql语句如下：

sql="insert into test1 (code) values (:code)"

params = [{'code':'xx'}]

self.cursor.executemany(sql, params)