pkzip-like utility script for python that uses zlib? (embedded python)

[Warren Postma]

I have an embedded controller running Python, and I can compile zlib into
the application. What I'm wondering is, is there a pre-written script that
will provide either a tar+gz or PkZip like functionality on top of ZLIB?

I want to be able to zip up and unzip the contents of my embedded system, to
provide a backup and restore of embedded system's contents. I can't spawn
external executables, as the main program is the only thing that can run in
this system, so if I can't use a Python script (with zlib) to do this, I
will be Out of Luck.

A standard file format like .tgz or .zip would be preferred. Any ideas?

Warren Postma