python 2.5's mailbox.py incompatible under 2.3

Article:		Processing Mailbox Files with mailbox.py
Subject:		python 2.5's mailbox.py incompatible under 2.3
Date:		2007-07-12 03:45:39
From:		amk1
Response to: python 2.5's mailbox.py incompatible under 2.3
Most modules in the Python standard library aren't written to be compatible with earlier versions of Python, so that bit of code is using a generator comprehension. To use the module with Python 2.3, you'd have to rewrite that line to create and sort a list instead.