metaextract is a tool to collect metadata about a python module. For example you may have a sdist tarball from the Python Package Index and you want to know it's dependencies. metaextract can collect theses dependencies. The tool was first developed in py2pack but is now it's own module to be useful for others, too.
You can find the documentation on readthedocs.
Fork the repository on Github to start making your changes to the master branch (or branch off of it). Don't forget to write a test for fixed issues or implemented features whenever appropriate. You can invoke the testsuite from the repository root directory via tox:
$ tox
If you run into bugs, you can file them in the issue tracker.