python MySQL多行插入失败

Question

i'm just trying to insert data into a small mysql (innodb) table i made for testing. the single row insert works:

cursor.execute("insert into testy (one, two) values (%s,%s)", ('00','01'))

but multiple row insert fails:

cursor.execute("insert into testy (one, two) values (%s,%s)", [('00','01'),('10','11'),('20','21')])

and gives the following error:

TypeError - not all arguments converted during string formatting

traceback:
  File "./testy.py", line 20, in <module>
    cursor.execute("insert into testy (one, two) values (%s,%s)", [('00','01'),('10','11'),('20','21')])
  File "/usr/lib/python2.7/dist-packages/MySQLdb/cursors.py", line 159, in execute
    query = query % db.literal(args)

i need to do the multi-row insert as it is much quicker than looping over the single row inserts. what am i doing wrong?

Answer 1

Use executemany method instead of execute :

cursor.executemany("insert into testy (one, two) values (%s,%s)",
                   [('00','01'),('10','11'),('20','21')])