REST APIs with Flask and Python - Mutable Default Parameters (and Why They're a Bad Idea)

The video tutorial discusses the pitfalls of using mutable default parameters in Python, using a student class example to illustrate the problem. It explains how mutable defaults can lead to unexpected behavior, such as shared state between instances. The tutorial provides a solution by using 'None' as a default and initializing the list within the function. It emphasizes best practices, advising against mutable defaults and suggesting alternatives like immutable types or initializing within the function.

What is the main issue with using mutable default parameters in Python functions?

Explain how the behavior of mutable default parameters can lead to unexpected results when creating multiple instances of a class.

What is the recommended approach to avoid issues with mutable default parameters?

How can you use 'None' as a default value to handle mutable parameters safely?

What types of default parameter values are considered safe to use in Python?