Pymysql Insert Into not working

Question

I'm running this from PyDev in Eclipse...

import pymysql
conn = pymysql.connect(host='localhost', port=3306, user='userid', passwd='password', db='fan')
cur = conn.cursor()
print "writing to db"
cur.execute("INSERT INTO cbs_transactions(leagueID) VALUES ('test val')")
print "wrote to db"

The result is, at the top of the Console it says C:...test.py, and in the Console:

writing to db wrote to db

So it's not terminating until after the execute command. But when I look in the table in MySQL it's empty. A record did not get inserted.

First off, why isn't it writing the record. Second, how can I see a log or error to see what happened. Usually there should be some kind of error in red if the code fails.

Answer 1

Did you commit it? conn.commit()

Answer 2

PyMySQL disable autocommit by default, you can add autocommit=True to connect():

conn = pymysql.connect(
    host='localhost',
    user='user',
    passwd='passwd',
    db='db',
    autocommit=True
)

or call conn.commit() after insert

Answer 3

You can either do

• conn.commit() before calling close

or

• enable autocommit via conn.autocommit(True) right after creating the connection object.

Both ways have been suggested from various people at a duplication of the question that can be found here: Database does not update automatically with MySQL and Python