How to list available versions of a Pypi package

While working on requirements that someone had for a pypi package, I found myself needing to list out the versions of the package that were available.  I didn't want to have to go to the pypi website, navigate to the package and then figure out how to see the available versions.  So, to the Googles I went.

In order to install a specific version of a package, you would run:

pip install =1.0.0

in order to install version 1.0.0 of said package.  But, if you provide nonsense as the option, like so:

pip install =blah

then what you get back is an error listing all of the available versions for that package:

> pip install mod_wsgi==blah
Collecting mod_wsgi==blah
Could not find a version that satisfies the requirement mod_wsgi==blah (from versions: 4.1.0, 4.1.1, 4.1.2, 4.1.3, 4.2.0, 4.2.1, 4.2.2, 4.2.3, 4.2.4, 4.2.5, 4.2.6, 4.2.7, 4.2.8, 4.3.0, 4.3.1, 4.3.2, 4.4.0, 4.4.1, 4.4.2, 4.4.3, 4.4.4, 4.4.5, 4.4.6, 4.4.7, 4.4.8, 4.4.9, 4.4.10, 4.4.11, 4.4.12, 4.4.13, 4.4.14, 4.4.15, 4.4.16, 4.4.17, 4.4.18, 4.4.19, 4.4.20, 4.4.21, 4.4.22, 4.4.23, 4.5.0, 4.5.1, 4.5.2, 4.5.3, 4.5.4, 4.5.5, 4.5.6, 4.5.7, 4.5.8, 4.5.9, 4.5.10, 4.5.11, 4.5.12, 4.5.13, 4.5.14, 4.5.15, 4.5.16, 4.5.17, 4.5.18, 4.5.19, 4.5.20, 4.5.21, 4.5.22, 4.5.23, 4.5.24, 4.6.0, 4.6.1, 4.6.2, 4.6.3, 4.6.4)
No matching distribution found for mod_wsgi==blah

Good to know its that easy.