Python FAM provides a Python module to use the File Alteration Monitor (http://oss.sgi.com/projects/fam) in Python.
Directory size listing utility written in python. Platforms supported: Windows, Linux, and any other platform that supports python.
The Abstract Large File (ALF) project is a portable library for writing files that can be larger than 2GB or contain holes on systems that don't natively support one or both properties.
Lino is a suite of Python packages for IT professionals who offer business applications for small and medium-sized enterprises.
Smart Copy is a single-file Python app for batch execution (Ant-like) of commands. For example, SC can dump a SQL database, zip it and a source dir, and then send everything to an FTP site. Batch files are XML-based. See More >> Wiki for full details.
PyVSS is a python module which allows you to copy files using Volume Shadow Copy Service (http://en.wikipedia.org/wiki/Shadow_Copy). It is in an early development phase, yet is stable, simple and straight-forward to use.