This is awesome! I have had a Let's Encrypt private beta email sitting in my email for a while, but didn't want to install the client because it has so many dependencies.
Are you sure it does all the proper SSL verification, that is, what versions of Python is it safe to use this with given the likes of PEP 476?
This uses the default ssl verification in whatever version of python you have. Even though all API requests use public key signing (so nothing really private is ever sent), if you're worried about someone MITM the API requests to letsencrypt.org, please use python 2.7.9+.
Are you sure it does all the proper SSL verification, that is, what versions of Python is it safe to use this with given the likes of PEP 476?