sudo easy_install pymarc
If you haven’t looked at eggs yet, they are pretty much the defacto standard for distributing python code. The PyPi (Python Package Index, aka Python Cheese Shop) allows easy_install to locate and download packages, which are then unpacked and installed.
pymarc was basically an experiment to make sure I understood how eggs worked with pypi. Next up Rob Sanderson has sent me some code he and a colleague did for parsing Library of Congress Classification Numbers which I’m going to bundle up as an egg as well. Stay tuned.