One way to find the version of a Python package is to look at the __version__ attribute. So for pg8000 you should be able to do:

pg8000.__version__

Unfortunately you couldn't do that with pg8000, so my task was to find the best way to implement it. The easiest way is to simply add the following line to the

__init__.py file:
__version__ = '1.9.10'

but that would have meant having to manually alter the file each time there's a release, and I already have to enter the version number in three places, setup.py and doc/conf.py and in a Git tag. I had a Google around, and found Versioneer. This gets the version from Git, so after versioneering pg8000 the release process is:

git tag -a x.y.z -m "Version x.y.z"python setup.py register sdist upload build_sphinx upload_docs

I may have been a bit premature in writing this post, because although it seems to work, I haven't used it in anger yet!