This code defines a function `increase`, modifies a list by...

This code defines a function increase, modifies a list by incrementing each of its elements by 1, and then prints one of the modified elements. Here's a step-by-step breakdown of what the code does:

1. The increase function:

   • Takes a list x as input.
   • Iterates through the indices of the list using a for loop and range(len(x)).
   • Increases each element of the list x by 1 using x[i] += 1.
   • Returns the modified list.

2. Variable my_list:

   • A list [10, 20, 30] is created and assigned to the variable my_list.

3. Calling the increase function:

   • The increase function is called with my_list as the argument.
   • Inside the increase function, the elements of my_list are modified directly (as lists are mutable objects in Python).
   • The modified list returned is assigned to result_list. At this point, the my_list itself has also been updated due to mutability.

4. Print statement:

   • print(my_list[1]) prints the second element (my_list[1]) of the now-modified list my_list.

Final Output:

The my_list list gets modified to [11, 21, 31] after the increase function is called. The value of my_list[1] is 21, so the program outputs:

21