PEP8 is a coding style guide for Python. Which increase readability and long-term maintainace. It is not mandatory but It is the good practice to use PEP8 standards For more detail about this you can follow following links ---------> https://www.python.org/dev/peps/pep-0008/ .................. There are also some automated tools for PEP8, Here is the link------->https://pypi.org/project/autopep8/