Not so much of a technical problem as a cosmetic problem, but when loading from game generated save files, a ugly \n for the breaks between lines appear in string variables.

For example:

You can remove the line

filen.write("\n")

or you can use the strip method on the string,

or you can just write your game save loader in such a way that it will decide which newlines should be ignored.

That's all I can think of now.