Add tests to follow PEP8 guidelines

### Is your feature request related to a problem? Please describe.
PEP stands for Python Enhancement Proposal. It is a style document that documents some best practices

### Describe the solution you'd like
Code written in Python should follow standard practices and PEP8 guidelines. For this a linter that follows these guidelines or some sort of checks can be implemented

### Describe alternatives you've considered
I would suggest using Flake8 to test if PEP8 best practices are followed in the code written or not. Additionally, Flake8 workflow tests can be setup to ensure pull requests made follow these guidelines as well.

### Additional context
Flake8 is not the only tool available and other alternatives can be considered.