Question

Write code that swaps the first and last elements in a list called my_list. Assume that the list has already been created and contains at least one element. Python

Answer 1

To swap the first and last elements of a Python list called 'my_list', store the first element in a temporary variable, then set the first element to the last element's value, and then set the last element to the temporary variable's value.

Step-by-step explanation:

Swapping Elements in a Python List

To swap the first and last elements in a list called my_list, you can use a simple python code snippet. First, make sure that your list my_list contains at least one element to avoid any index errors. Here's a step-by-step guide to perform the swap:

Store the first element of the list in a temporary variable.

Set the first element of the list to the value of the last element.

Set the last element of the list to the value stored in the temporary variable.

Here is an example of the Python code that performs this task:

# Assume my_list is already defined and contains at least one element

temp = my_list[0]
my_list[0] = my_list[-1]
my_list[-1] = temp

Now, the first and last elements of my_list have been swapped. This is a common operation in Python programming when dealing with list manipulations.