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Python Unlocked by Arun Tigeraniya

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Using language protocols in classes

All objects that provide a specific functionality have certain methods that facilitate that behavior, for example, you can create an object of type worker and expect it to have the submit_work(function, kwargs), and is _completed() methods. Now, we can expect all objects that have these methods to be usable as workers in any application portion. Similarly, the Python language has defined some methods that are needed to add a certain functionality to an object. If an object possesses these methods, it has that functionality.

We will discuss two very import protocols: iteration protocol, and context protocol.

Iteration protocol

For iteration protocol, objects must possess the __iter__ method. If the object possesses ...

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