Correct the mentioned pylint errors to get perfect 10. (useless-else-on-loop, too-many-nested-blocks)

[LordGameleo]

We are currently using a customized checklist for pylint. We have disabled a lot of checks to make our build successfully. We want to counter these checks few at a time. This issue deals with one of them.

How to produce:

After forking and cloning this repo, make a branch named develop-Pylint_Issue#185 using
git branch develop-Pylint_Issue#185

Checkout branch by
git checkout develop-Pylint_Issue#185

remove useless-else-on-loop and too-many-nested-blocks from .pylintrc file

Check pylint errors using
pylint * on terminal (in the repo)

Add doc strings to get a perfect 10 score on pylint.

[shrawnz]

Hi, I'd like to pick up this issue

[LordGameleo]

@shrawnz Yeah feel free to work on this one. Remember to deal with one of these check at once. Separate different checks by using separate commits.