Hello.

I usually develop in ** C # **, but recently I had the opportunity to come into contact with ** Python **. After coding with the feeling of ** C # **, when I checked it again with PEP8, which is the coding convention of ** Python **, the variable declaration etc. are sober. By the way, there was a difference in the naming convention, so I roughly summarized the naming conventions for ** C # ** and ** Python **.

In PEP8, it is written that the project should give priority to the coding standard when the coding standard of the project is conflicted as follows.

Many projects have guidelines for their coding style. If it conflicts with the terms of this document, the guidelines for that project will prevail.

Introduction

First, a brief explanation of the naming convention.

Naming convention	Description	Example
CamelCase	Capitalize the beginning of words except the beginning.	happyNewYear
PascalCase	Capitalize the beginning of a word, including the beginning.	HappyNewYear
SnakeCase	All words are lowercase. Connect with underscore.	happy_new_year
ConstantCase	All words are capitalized. Connect with underscore.	HAPPY_NEW_YEAR

Pascal case is also called upper camel case.
The constant case is also called the upper snake case.
In PEP8, it is expressed as CapWords format, but since I did not understand the difference from Pascal format, it is organized as Pascal format below. ..

Naming convention comparison list

A quick comparison list of C # and Python naming conventions.

Identifier	C #	Python
Package (namespace)	PascalCase	All lowercase letters
Package (namespace)	HappyBirthday	happybirthday
Module	PascalCase	All lowercase / SnakeCase
Module	HappyBirthday	happybirthday / happy_birthday
Class	PascalCase	PascalCase
Class	HappyBirthday	HappyBirthday
Type variable	PascalCase	PascalCase
Type variable	HappyBirthday	HappyBirthday
Exceptions	PascalCase	PascalCase
Exceptions	HappyBirthdayException	HappyBirthdayError
Global Variables	Pascal	SnakeCase
Global Variables	HappyBirthday	happy_birthday
Parameters (arguments)	CamelCase	SnakeCase
Parameters (arguments)	happyBirthday	happy_birthday
Method (function)	PascalCase	SnakeCase
Method (function)	GetHappyBirthday	get_happy_birthday
Variables	CamelCase	SnakeCase
Variables	happyBirthday	happy_birthday
Constant	PascalCase	ConstantCase
Constant	HappyBirthday	HAPPY_BIRTHDAY

In addition, the difference in the description such as class definition and method definition in the control statement such as indent, comment, IF etc. written in PEP8 is different. I will take the opportunity to summarize it.

reference) Python Code Style Guide (PEP8)

[Introduction to Python] I compared the naming conventions of C # and Python.

Introduction

Naming convention comparison list