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The Real Python Podcast cover image

Pydantic Data Validation & Python Web Security Practices

The Real Python Podcast

NOTE

Understanding Python List Multiplication Behavior

When multiplying a list inside another list in Python, it generates multiple references pointing to the same inner list. Hence, when appending to one, the change reflects in all as they are essentially the same list object. This behavior occurs because everything in Python is an object. The ID function in Python confirms this by returning the same identifier for all the inner lists. Abinav's article explains this phenomenon, highlighting the importance of recognizing object references versus new object creation in Python.

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