Increase code style lint

[pvk-developer]

Problem Description

Currently our code is being validated only by flake8 'vanilla' and just a few plugins. We would like to increase the code style checks by adding more add-on's that follow our code style and our standards.

Also we would like to ensure that our docstrings are properly written and follow the rest of our format.

Additional context

We have performed this task already on RDT , more precisely on the following issue:
sdv-dev/RDT#248 (comment)

Docstring plugin

We need to add pydocstyle plugin with the following lines on our setup.cfg file as we are following the google convention.

[pydocstyle]
convention = google
add-ignore = D107, D407, D417

Flake8 plugins to be added

Flake8 comes with a lot of different addons that we can use to adapt it to our codestyle and checking, here is a list of plugins that I found to be interesting for us:

• flake8-builtins - Check for python builtins being used as variables or parameters.
• flake8-comprehensions - Helps you write better list/set/dict comprehensions.
• flake8-debugger - Debug statement checker.
• flake8-variables-names - Extension that helps to make more readable variables names.
• Dlint - Tool for encouraging best coding practices and helping ensure Python code is secure.
• flake8-mock - Provides checking mock non-existent methods.
• flake8-fixme - Check for FIXME, TODO and other temporary developer notes.
• flake8-eradicate - Plugin to find commented out or dead code.
• flake8-mutable - Extension for mutable default arguments.
• flake8-print - Check for print statements in python files.
• flake8-pytest-style - Plugin checking common style issues or inconsistencies.
• flake8-quotes - Extension for checking quotes in python.
• flake8-multiline-containers - Plugin to ensure a consistent format for multiline containers.
• pandas-vet - Plugin that provides opinionated linting for pandas code.
• pep8-naming - Check the PEP-8 naming conventions.
• flake8-expression-complexity - Plugin to validate expressions complexity.
• flake8-sfs - String formatting.