What is the output of the following snippet? my_list = [1, 2] for v in range(2): my_list.insert(-1, my_list[v]) print(my_list)

my_list = [1, 2]
 
for v in range(2):
    my_list.insert(-1, my_list[v])
 
print(my_list)

• [1, 1, 1, 2]
• [2, 1, 1, 2]
• [1, 2, 2, 2]
• [1, 2, 1, 2]

Explanation: Let’s analyze the program:

• Line 1: the my_list list is created. The list stores the following contents: [1, 2]
• Line 3: the range() function generates a sequence of two numbers (0 and 1), and the for loop iterates over that sequence. The v variable takes the value of the number inside the sequence on each iteration, and the loop continues until the last number in the sequence is reached. The body of the loop is entered and the my_list.insert(-1, my_list[v]) operation is performed two times.
• Line 4: after the first for loop iteration (when v = 0), the [1, 2] list is updated – the insert() method inserts a new element to the list (v = 0, so my_list[v] = 1) at the specified index (-1). The my_list list after the first for loop iteration has the following contents: [1, 1, 2]. After the second for loop iteration (when v = 1), the [1, 2, 3] list is updated for the second time – the insert() method inserts another new element to the list (v = 1, so my_list[v] = 1) at the specified index (-1). The my_list list after the second for loop iteration contains the following contents: [1, 1, 1, 2].
• Line 6: the print() function prints the list contents to the screen.

More Questions: Python Essentials 1 (PE1) Course Final Test