PEP8 is the official style guide for Python code. It was co-authored by Python creator Guido van Rossum so nobody doubts its validity.
The PEP8 standard consists of roughly 7500 words so it’s a lot work to study it thoroughly (but it’s worth it). Many Python coders just starting out don’t invest the time and start writing Python code right away…
… until they get bashed for “not writing Pythonic code” on an online forum such as Reddit or StackOverflow, or, worse, a code review at their company.
To help coders write more Pythonic code, there are three main Python style checkers available.