Ever since I learnt about Exercism.io, I have been working on their Python coding exercises. They are relatively simple problems, but it's a great way to learn Python.
Each exercise is represented by a folder of it's own. Any files with the word 'test' in the filename has been created by Exercism.io.
These files are for learning purposes only.
Finally, a big thank you to the creator of Exercism.io, Katrina Owen.
I have also been working on coding exercises on CheckIO.org, I'll post some of the trickier exercises too.