Question

Create a new Python program (you choose the filename) that contains a main function and another function named change_list. Refer to the SAMPLE OUTPUT after reading the following requirements.

In the main function:

• create an empty list.
• use a for loop to add 12 random integers, all ranging from 50 to 100, to the list.
• use second for loop to iterate over the list and display all elements on one line separated by a single space.
• display the 4th element, the element at index 9, and the smallest element.
• call the change_list function with your list as its sole argument.

In the change_list function:

• use a slice to make a new list from the list that was passed into this function. The new list should hold the middle 6 elements of the list that was passed in. NOTE: you must accomplish this step with a slice.
• use a function to determine the size of the new list. Print the size.
• sort the new list in ascending order and return the sorted list to main.

Back in the main function:

• assign the list returned by change_list to a new list.
• use another for loop to iterate over this returned list and display all elements on one line, separated by a single space.

SAMPLE OUTPUT
Here is the list of random integers...
99 66 57 81 75 59 58 74 56 90 75 65
The 4th element in the list is 81
The element at index 9 is 90
The smallest element in the list is 56
The size of the list is now 6
change_list returned this sorted list...
56 58 59 74 75 81

Answer 1

'''

Python version : 2.7

Python program to create a main function and another function named change_list.

'''

import random

'''

function change_list that takes as input a list and returns another list consisting of middle

6 elements and sorts them i ascending order and retruns it

'''

def change_list(in_list):

              

               new_list = []

               # check if length of input is list <=6, then copy the entire list to new_list

               if len(in_list) <= 6:

                              new_list = in_list

               else: # copy the middle 6 elements from in_list to new_list

                              idx = (len(in_list)-6)//2

                              new_list = in_list[idx:idx+6]

               # print the size of the list

               print('The size of the list is now '+str(len(new_list)))

               # sort the new_list

               new_list.sort()

              

               # return the new_list

               return new_list

# main function

def main():

               # create an empty list     

               in_list = []

               # randomly add 12 elements between [50,100]

               for i in range(12):

                              in_list.append(random.randint(50,100))

               # print the list of elements           

               print('Here is the list of random integers...')

               for i in range(len(in_list)):

                              print(str(in_list[i])+ ' '),

               # print the 4th element  

               print('\nThe 4th element in the list is '+str(in_list[3]))

               # print the element at index 9

               print('The element at index 9 is '+str(in_list[9]))

               # print the smallest element of the list using min function

               print('The smallest element in the list is '+str(min(in_list)))

              

               # get the new_list returned by calling change_list function

               new_list = change_list(in_list)

              

               # display the new_list

               print('change_list returned this sorted list...')

               for i in range(len(new_list)):

                              print(str(new_list[i])+ ' '),

#call teh main function                 

main()   

                             

#end of program                            

Code Screenshot:

Output: