Question

I’m trying to execute a query with the Tornado’s database wrapper, like this –

p_id = db.execute_lastrowid("""INSERT INTO `gplaces`.`place` 
                                    (`gid`, `name`, `reference`, `lat`, `long`, `vicinity`) 
                                    VALUES (%s, %s, %s, %s, %s, %s)""", 
                                    (
                                        str(place['id']),
                                        str(place['name']),
                                        str(place['reference']),
                                        float(place['geometry']['location']['lat']),
                                        float(place['geometry']['location']['lng']),
                                        str(place['vicinity'])
                                    )
                                )

But always getting the error in the title. Here is the traceback –

Traceback (most recent call last):
  File "insertbs.py", line 38, in <module>
    str(place['vicinity'])
  File "/home/bibhas/Works/yodl/database.py", line 145, in execute_lastrowid
    self._execute(cursor, query, parameters)
  File "/home/bibhas/Works/yodl/database.py", line 207, in _execute
    return cursor.execute(query, parameters)
  File "/usr/lib/pymodules/python2.7/MySQLdb/cursors.py", line 159, in execute
    query = query % db.literal(args)
TypeError: not enough arguments for format string

Not sure what I’m doing wrong.

Answer 1

Don’t pass a tuple of values, pass them as separate arguments.

From the traceback:

query = query % db.literal(args)

Note what’s being interpolated in – args. Basically, just remove the () around the things you were passing in so that they get passed as args instead.