Although PEP 8 is only compulsory for the Python standard library, many users like to stick to PEP 8 for external projects.
http://www.python.org/dev/peps/pep-0008/ With perhaps one glaring exception: many people hate, or ignore, PEP 8's recommendation to limit lines to 80 characters. (Strictly speaking, 79 characters.) Here is a good defence of 80 char lines: http://wrongsideofmemphis.com/2013/03/25/80-chars-per-line-is-great/ -- Steven -- http://mail.python.org/mailman/listinfo/python-list
