What are some real-world examples of pattern matching in Python?

What are some real-world examples of pattern matching in Python?

Pattern matching in Python can be used in various scenarios, such as data validation, parsing complex data structures, and implementing state machines. For instance, you can use it to match different shapes in a graphics application or to handle different types of user input.

Can you give me a specific code example?

Sure! Here's a simple example:

match shape:
    case Circle(radius):
        print(f'Circle with radius: {radius}')
    case Rectangle(width, height):
        print(f'Rectangle with width: {width} and height: {height}')
    case _:
        print('Unknown shape')

This code uses pattern matching to handle different shape types.

What version of Python introduced pattern matching?

Pattern matching was introduced in Python 3.10. It allows for more expressive and readable code when dealing with complex data structures.

Are there any performance considerations with using pattern matching?

Yes, while pattern matching can make your code cleaner and more readable, it's important to consider that it may have performance implications depending on the complexity of the patterns and the size of the data being matched. Always profile your code if performance is a concern.