The Python Data Model & Memory

Copying: Shallow vs Deep

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Three Levels of 'Copying'

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IN THIS LESSON

YOU’RE LEARNING TO

↗distinguish assignment (no copy) from shallow copy from deep copy

↗predict which parts of a nested structure are shared after a shallow copy

↗use the copy module correctly, including copy.copy() and copy.deepcopy()

↗implement __copy__ and __deepcopy__ for custom classes

↗choose the right copying strategy for a given situation