Here are a few question-based titles that fit the provided text: * How Do Negative List Indices Work in Python? * What are Negative Indices in Python Lists and How are They Used? * Understanding Nega

Understanding Negative List Indices

When working with lists in Python, you may encounter negative indices. These indices, unlike positive indices that count from the beginning of the list, count from the end.

To understand how negative indices work, consider the following code:

<code class="python">n = []
for i in range(1, numnodes + 1):
    tmp = session.newobject()
    n.append(tmp)
link(n[0], n[-1])</code>

In this code, the negative index -1 is used to access the last element of the list n. Negative indices start from the right of the list and decrease towards the left. This means that:

• n[0] accesses the first element of the list.
• n[-1] accesses the last element of the list.
• n[-2] accesses the second-last element of the list.
• And so on.

By understanding the concept of negative indices, you can effectively access and modify elements in lists from both the beginning and end, providing flexibility and efficiency in your Python code.

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