The Ultimate Guide to Python Programming With Python 3.10 - Sentinels

The video tutorial introduces the concept of Sentinels in Python, which are data types that do not hold any value, similar to None. It explains how to create custom Sentinels using the object class and demonstrates their use in function arguments to differentiate between user input and default values. The tutorial highlights the importance of using Sentinels to avoid confusion when None is used as a default argument in functions.

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