Author of the best pure-python dbf library*!
Other possibly interesting packages (all are Python2/3 compatible, as is
pandaemonium -- a daemon framework with good debugging support and a built-in lockfile implementation
antipathy -- a file path class that is derived from
unicode, so can be seamlessly passed to other functions that expect a
unicodeobject, while still allowing you to use more intuitive actions
scription -- a library to aid writing command line scripts: includes support for separate arguments per sub-command, basic interaction with the user, executing sub-programs, being run SUID, etc
xaml -- based on the same idea as haml, only for Python (still in its infancy)
*I'm biased, of course.