How does Python handle mutable default arguments in function definitions?

Mutable default arguments are automatically converted to immutable types.
Python creates a new instance of the mutable object every time the function is called.
Python raises an error when mutable objects are used as default arguments.
The default mutable object is shared across all function calls.

Python handles mutable default arguments by sharing the same object across all function calls. This can lead to unexpected behavior if the mutable object is modified within the function. To avoid this, use immutable types as default arguments.

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