What are some fun use cases for functors in Python?

What are some fun use cases for functors in Python?

Functors in Python can be used for various purposes, such as functional programming, data transformation, and more. For example, you can use functors to create a mapping function that applies a specific operation to each element in a list.

Can you give me a specific example of a functor in action?

Sure! Let's say you have a list of numbers and you want to square each number. You can create a functor that takes a function as an argument and applies it to each element in the list.

How would that look in code?

Here's a simple example:

class Functor:
    def __init__(self, value):
        self.value = value

    def map(self, func):
        return Functor(func(self.value))

number = Functor(5)
result = number.map(lambda x: x ** 2)
print(result.value)  # Output: 25

That's really cool! What other applications do functors have?

Functors can also be used in scenarios like composing functions, handling asynchronous operations, or even in building pipelines for data processing.