Iḿ developing a python package which allows to develop digital circuits. It currently has modules for logic gates, multiplexers and latches; and the next version will include adders, shift registers, and even a simple ALU! Check it out on github.
Because a lot of people know python and don't want to bother learning anything else.... (Not saying it's a good thing or that it applies to author, chances are this is for fun).
Btw, I've just released version 1.0.0, which means the project is now on the state I thought of it when I started developing. I encourage all of you to check it out :)
Something like
https://github.com/myhdl/myhdl
or
https://github.com/m-labs/migen