To be more flexible it should probably look more like this: def inc(s): import string id, count = (s[:1], s[1:]) count = string.zfill(str(int(count) + 1), len(count)) return '%s%s' % (id, count) That way even 'B00000006' would get incremented properly. -- Jeffrey D Peterson Webmaster Crary Industries, Inc. From: zope-bounces@zope.org [mailto:zope-bounces@zope.org] On Behalf Of Ebbe Kvist Sent: Friday, August 13, 2010 11:17 AM To: zope@zope.org Subject: [Zope] string formatting Hi all, I want to process a variable, signum2, which is picked up from a MySQL database. The content of the variable is "B006". The aim is to process this variable so the result will be "B007" and it will then be saved as part of a new record in the database. The core process is to increment the integer part of the variable "006" with 1. I have successfully done this incrementation but I have not been able to create a new correct content for the new varable new_xyz. <dtml-call "REQUEST.set('signumfix2',signum2[1:4])"> <dtml-call "REQUEST.set('signumfix2', _.int(signumfix2)+1)"> How can I from here create the correct content of the new variable? I need to bring the "B" part with me and then the incremented integer part formatted with two preceeding zeroes. Does anyone know? Best regards, Ebbe Kvist Stockholm _______________________________________________________________ Hitta kärleken med hjälp av vårt matchningstest - Klicka här!<http://spray.matchaffinity.se/?mtcmk=614114>