Python3 compat: Remove usage of urllib2

[sundhaug92]

https://stackoverflow.com/questions/2792650/import-error-no-module-name-urllib2

Alternatives: Use the six-library or requests

[Hasimir]

This project hasn't been updated in a very long time, at least seven years. It's safe to say that the author has has moved on to other projects and getting a fix for something like this here is not worth the effort.

Fortunately there's already an alternative incorporated into another project over here and specifically in this bit. You can indeed copy that directory and use it as a module, though it lacks tests when done that way. It appears to be functionally identical to this project, it's written for Python 3 and it uses requests.

It definitely works too.

[Hasimir]

The project I referred to previously has now been split off into it's own dedicated package as hkp4py. Python 2.7 support has been restored and it's on PyPI.

The announcement was posted to the gnupg-devel mailing list earlier this week. It'll be included in examples in the GPGME Python Bindings HOWTO in time for the next release.