Organize Your Python Constants with Enums

In programming, managing related constants can quickly become messy if not organized effectively. Python provides an elegant solution for this in the form of Enums (short for Enumerations). Enums allow you to define a group of related, unique, and constant values in a type-safe way. They’re perfect for scenarios where you need a fixed set of values, like days of the week, colours, or states in a process.

Let’s dive into the world of enums in Python and see how they can simplify your code.

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What is an Enum in Python?

An enum is a class that represents a set of unique, constant values. Python’s enum module provides the Enum class, which you can use to create enumerations.

Here’s a simple example:

from enum import Enum

class Color(Enum):
    RED = 1
    GREEN = 2
    BLUE = 3

# Accessing enum members
print(Color.RED)            # Output: Color.RED
print(Color.RED.name)       # Output: RED
print(Color.RED.value)      # Output: 1

Why Use Enums?

Enums improve code readability and maintainability by: