How do I deep copy lists in Python for beginners?

In Python, to create a deep copy of a list (or any other mutable object), you can utilize the `copy` module, specifically the `deepcopy` function. A deep copy means that all objects are copied recursively, meaning that if there are nested objects, those will also be copied rather than referenced.

Here’s a simple example demonstrating how to deep copy a list:

import copy original_list = [1, 2, [3, 4]] deep_copied_list = copy.deepcopy(original_list) # Modifying the deep copied list won't affect the original deep_copied_list[2][0] = 'changed' print("Original List:", original_list) # Output: Original List: [1, 2, [3, 4]] print("Deep Copied List:", deep_copied_list) # Output: Deep Copied List: [1, 2, ['changed', 4]]

deep copy python lists copy module deepcopy function mutable objects

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