Скачать или смотреть Python Identity Operators Explained Simply (Full Tutorial)

In Python, identity operators are used to check if two variables refer to the exact same object, not just if they are equal. There are two identity operators: IS: Returns True if both variables point to the same object.
IS NOT: Returns True if the variables point to different objects.
In this tutorial we also cover the ID function within Python. This function is used to get a unique identifier for an object. This identifier is an integer that remains constant for the object during its lifetime. We also discuss that the ID function works for strings in Python just like it does for other objects. However, strings in Python have a unique behavior known as string interning. Interning means that Python tries to reuse existing immutable objects, like strings, to save memory. So, sometimes, two different string variables might actually reference the same string object if they have the same content. But this is not guaranteed for all strings.

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