Description

Lets you save and restore the previous state of an object without revealing the details of its implementation.

Where to use

• Snapshots.
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• Game Save Systems.
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• Undo features.

Real World Example

A text editor saves a snapshot of the document state before every change.

Code Example

class Memento:
    def __init__(self):
        pass

    def execute(self):
        print('Executing Memento')