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The difference between shallow and deep copying is only relevant for
compound objects (objects that contain other objects, like lists or
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- A deep copy constructs a new compound object and then, recursively,
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Two problems often exist with deep copy operations that don't exist
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Python's deep copy operation avoids these problems by:

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This version does not copy types like module, class, function, method,
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Classes can use the same interfaces to control copying that they use
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