python enum from value

Veröffentlicht am: 20 Dezember 2023
auf dem Kanal: CodeLearn

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Title: A Guide to Python Enums: Creating Enums from Values
Enums, or enumerations, are a powerful feature in Python that allow you to create named constant values. In this tutorial, we will explore how to create Python Enums from values, providing a convenient and readable way to represent a set of predefined constants.
Make sure you have Python installed on your machine. This tutorial assumes a basic understanding of Python.
Before diving into creating Enums from values, let's quickly review the basics of Enums in Python. Enums are defined using the enum module.
Here, Color is an Enum with three members: RED, GREEN, and BLUE. Each member is assigned a unique integer value.
To create Enums from values, you can use the enum.auto() function, which automatically assigns a unique value to each Enum member.
In this example, auto() is used to automatically assign unique values to PENDING, APPROVED, and REJECTED.
If you want to assign specific values to Enum members, you can still mix auto() with explicit values.
In this case, LOW and HIGH will be automatically assigned unique values, while MEDIUM has an explicit value of 50.
You can access Enum members using dot notation:
You can easily iterate over all the members of an Enum:
This will print:
Enums can be used in comparisons, making code more readable:
Creating Enums from values in Python provides a clean and structured way to represent a set of constants. Enums make your code more readable and maintainable, and they are a powerful tool in the Python developer's toolbox. Experiment with Enums in your projects to see the benefits they bring to your codebase.
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