Newbie problem inserting into MySQL

Edwin.Madari at VerizonWireless.com Edwin.Madari at VerizonWireless.com
Mon Aug 18 21:28:22 CEST 2008



>  -----Original Message-----
> From: 	Madari, Edwin  
> Sent:	Monday, August 18, 2008 3:03 PM
> To:	'len'; python-list at python.org
> Subject:	Re: Newbie problem inserting into MySQL
> 
> > -----Original Message-----
> > From: 
> python-list-bounces+edwin.madari=verizonwireless.com at python.org
> > [mailto:python-list-bounces+edwin.madari=verizonwireless.com at p
> > ython.org]
> > On Behalf Of len
> > Sent: Monday, August 18, 2008 11:55 AM
> > To: python-list at python.org
> > Subject: Newbie problem inserting into MySQL
> > 
> > 
> > Hi All
> > 
> > I have started a little pet project to learn python and MySQL.  The
> > project involves figuring out all the combinations for a 5 number
> > lottery and storing the data in a MySQL file.
> > 
> > The file looks like this;
> > +----------+---------------------+------+-----+---------
> > +----------------+
> > | Field    | Type                | Null | Key | Default |
> > Extra          |
> > +----------+---------------------+------+-----+---------
> > +----------------+
> > | lottryid | int(11)             | NO   | PRI | NULL    |
> > auto_increment |
> > | lottryno | char(10)            | YES  |     | NULL
> > |                |
> > | no1      | tinyint(3) unsigned | NO   |     | NULL
> > |                |
> > | no2      | tinyint(3) unsigned | NO   |     | NULL
> > |                |
> > | no3      | tinyint(3) unsigned | NO   |     | NULL
> > |                |
> > | no4      | tinyint(3) unsigned | NO   |     | NULL
> > |                |
> > | no5      | tinyint(3) unsigned | NO   |     | NULL
> > |                |
> > | nosum    | tinyint(3) unsigned | NO   |     | NULL
> > |                |
> > | nohits   | int(10) unsigned    | YES  |     | NULL
> > |                |
> > +----------+---------------------+------+-----+---------
> > +----------------+
> > 
> > The code looks as follows;
> > #!/usr/lib/env python
> > 
> > import MySQLdb
> > import datetime
> > 
> > db = MySQLdb.Connection(host="localhost", user="lenyel",
> > passwd="lsumnler", \
> > db="lottery")
> > 
> > cursor = db.cursor()
> > 
> > cursor.execute('delete from littlelottery')
> > 
> > listofrec = []
> > 
> > tupcnt = 0
> > print "first tuple created"
> > for a in xrange(1,36):
> >     for b in xrange(2,37):
> >         for c in xrange(3,38):
> >             for d in xrange(4,39):
> >                 for e in xrange(5,40):
> >                     tupcnt += 1
> >                     thekey = ('%02i%02i%02i%02i%02i' % (a,b,c,d,e))
> >                     mysum = a + b + c + d + e
> >                     rectuple = tupcnt, thekey, a, b, c, d, 
> e, mysum, 0
> >                     listofrec.append(rectuple)
> >                     if tupcnt % 10000 == 0:
> >                         print "beginnign of mysql write"
> >                         print datetime.datetime.now().time()
> >                         cursor.executemany('''insert into
> > littlelottery
> >                         values (?,?,?,?,?,?,?,?,?)''', listofrec)
> >                         db.close()
> >                         print "end of mysql write"
> >                         print datetime.datetime.now().time()
> >                         os._exit()
> > 
> > print "insert into mysql completed"
> > 
> > i get the following error on insert;
> > raise errorclass, errorvalue
> > TypeError: not all arguments converted during string formatting
> > Script terminated.
> > 
> > Do I have to covert all of the fields in the tuple records to string
> > or what?
> > 
> > Len Sumnler
> > --
> > http://mail.python.org/mailman/listinfo/python-list
> > 
> 
> statement prepared first and executed many times with 
> exectemany - db API http://www.python.org/dev/peps/pep-0249/ 
> inline statemets can be exeucuted only.
> 
> hope that helps
> Edwin

another thing - cumulative inserts will result, since listofrec is not emptied after each sql execution.

regards
Edwin



The information contained in this message and any attachment may be
proprietary, confidential, and privileged or subject to the work
product doctrine and thus protected from disclosure.  If the reader
of this message is not the intended recipient, or an employee or
agent responsible for delivering this message to the intended
recipient, you are hereby notified that any dissemination,
distribution or copying of this communication is strictly prohibited.
If you have received this communication in error, please notify me
immediately by replying to this message and deleting it and all
copies and backups thereof.  Thank you.





More information about the Python-list mailing list