Python abstract base class ABC example

YOUR LINK HERE:

http://youtube.com/watch?v=hEW-IWGluG4

In today's video we'll show you how you can use ABCs + the abstractmethod decorator to enforce an interface . • First you define a parent class that inherits from the abc.ABC (or uses metaclass=ABCMeta) and decorates one or more methods with the abstractmethod decorator. Subclasses that inherit from this parent class now NEED to implement those abstract methods. Not doing so these sub- or child classes cannot even be instantiated. • If this sounds high level, don't worry. We illustrate all this with code from our recent Pybites Search project. • • We also quickly look at how the Repository Pattern typically leverages this technique. • Links: • Python abcs (abstract base classes): https://docs.python.org/3/library/abc... • Pybites Search project / code: https://github.com/PyBites-Open-Sourc... • Repository pattern (as featured in the Cosmic Python book): https://www.cosmicpython.com/book/cha... • Subclasses article: https://pybit.es/articles/python-subc...

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