In Sublime Text 2 you can enjoy as-you-type PEP8 linting by using the SublimeLinter plugin:
What's more, you can control which of the PEP8 errors to ignore (not that you'd want to ignore any, of course!) Take a look in the SublimeLinter.sublime-settings file for the "pep8_ignore" declaration. Here's a snippet of the relevant section:
// Set this to false to turn pep8 checking off completely
A list of pep8 error numbers to ignore. By default "line too long" errors are ignored.
The list of error codes is in this file: https://github.com/jcrocholl/pep8/blob/master/pep8.py.
Search for "Ennn:", where nnn is a 3-digit number.