How to Copy a List in Python Using Indexing?

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To copy a list in Python using indexing, you can use the [:] slicing syntax. This will create a new list that is a copy of the original list. Here’s an example:

original_list = [1, 2, 3, 4, 5]
copied_list = original_list[:]

In this example, we create a new list called copied_list by using the slicing syntax [:] on the original_list. This creates a new list with the same elements as the original list and assigns it to the copied_list variable.

You can also use indexing to copy only part of the original list. For example, if you wanted to copy the first three elements of the original_list, you could do it like this:

original_list = [1, 2, 3, 4, 5]
copied_list = original_list[:3]

In this example, we use the slicing syntax [:3] to copy the first three elements of the original_list and assign them to the copied_list variable.

Keep in mind that when you use indexing to copy a list, you are creating a shallow copy, which means that any mutable objects, such as other lists or dictionaries, will be passed by reference, and any changes made to them in the copied list will also affect the original list. If you want to create a deep copy of a list that contains mutable objects, you can use the copy module’s deepcopy() function, as I have explained in a previous answer.

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