Any mutable Python object doesn’t have a consistent hash value over its lifetime, ... To retrieve a value from a dictionary, you use Python’s indexing syntax: example_values ...

So, using mutable objects as default arguments is not a good idea. You should never do that. 4. ... To solve this, you should either use pathlib, Python’s built in tool, ...

Python handles mutable and immutable objects differently. Immutable are quicker to access than mutable objects. Mutable objects are great to use when you need to change the size of the object, example ...