How Python Handles Value Passing: Pass by Value or Reference?

Passing Values in Python

Python adopts a unique mechanism known as "pass by value with references to objects." This means when you pass a value to a function, a copy of the reference to the object is created. This allows any changes made within the function to directly impact the original object outside the function's scope.

This concept is vital to comprehend the behavior of data types in Python. Immutable objects, such as strings, tuples, and numbers, exhibit pass-by-value characteristics. Altering these objects within a function produces a new instance, leaving the original object unchanged outside the function.

On the other hand, mutable objects like lists and dictionaries are pass-by-reference. Manipulating these objects inside a function results in alterations to the original object outside the function.

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