Familiar territory

One of the ideas that emerge from the previous list of topics is that most functional programming is already present in Python. Indeed, most functional programming is already a very typical and common part of Object-Oriented Programming.

As a very specific example, a fluent Application Program Interface (API) is a very clear example of functional programming. If we take time to create a class with return self() in each method function, we can use it as follows:

some_object.foo().bar().yet_more()

We can just as easily write several closely-related functions that work as follows:

yet_more(bar(foo(some_object)))

We've switched the syntax from traditional object-oriented suffix notation to a more functional prefix notation. Python ...

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