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Python Enum (Enumeration) is a powerful and convenient way to create named constant values. Enumerations are useful when you want to represent a set of unique, related values with human-readable names. Python provides the enum module for working with enumerations. In this tutorial, we'll explore how to use the Enum class in Python with examples.
To create an enumeration, you need to import the Enum class from the enum module. Here's a basic example:
In this example, we've created an enumeration called Color with three members: RED, GREEN, and BLUE. Each member is associated with a unique value.
Once an enumeration is defined, you can access its members using the dot notation:
You can iterate over all members of an enumeration using a loop:
This will output:
Enum members can be compared using equality and identity:
The Enum class can be used as a function to create enumerations dynamically:
You can associate additional data with each enum member using the namedtuple function:
This example demonstrates creating an enumeration of shapes and associating additional data with each shape using a namedtuple.
In this tutorial, we've explored the basics of using the Enum class in Python to create enumerations. Enums provide a clean and readable way to represent sets of related constant values in your code. As you become more familiar with enums, you can leverage their power to improve the clarity and maintainability of your Python programs.
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