How do I deep copy lists in Python with standard library only?

In Python, you can create a deep copy of a list using the standard library without relying on external modules. The `copy` module provides a convenient way to achieve this through the `deepcopy` function.

Example of Deep Copying a List

import copy # Original list with nested elements original_list = [[1, 2, 3], [4, 5, 6]] # Deep copy of the original list deep_copied_list = copy.deepcopy(original_list) # Modifying the deep copy won't affect the original deep_copied_list[0][0] = 99 print("Original List:", original_list) # Output: [[1, 2, 3], [4, 5, 6]] print("Deep Copied List:", deep_copied_list) # Output: [[99, 2, 3], [4, 5, 6]]

Python deep copy lists copy module deepcopy standard library

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