What are the Recommended Naming Conventions for Variables and Functions in Python?

Naming Conventions in Python: Variables and Functions

In Python, unlike C# where camelCase or PascalCase is prevalent, a different naming convention is observed. Let's explore the preferred practices for Python.

CamelCase and PascalCase in Python

Although you may encounter camelCase and PascalCase in Python, these conventions are generally not recommended.

Snake Case

The preferred naming convention in Python is snake_case, where words are separated by underscores.

Example:

this_is_my_variable = 'a'
def this_is_my_function():

PEP 8 Guidelines

The Python Enhancement Proposal 8 (PEP 8) outlines the coding style conventions for Python. It explicitly states that:

• Function names should be lowercase, separated by underscores for readability.
• Variable names follow the same convention as function names.
• mixedCase is acceptable only in specific contexts where it is already common practice to preserve backward compatibility.

Additional Considerations

• Class names use the convention CapitalizedWords (e.g., MyClass).
• Constants use the convention UPPER_CASE_WITH_UNDERSCORES.
• Avoid using special characters (e.g., $, %, ^) in variable names.
• Keep variable names short and descriptive.

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