Question

The file Months.txt has 12 lines with each line containing one of the months of the year. Write a program that displays the months containing the letter r. The program should use a global variable months that is initialized as the empty list. The function main should call three functions, one to fill the list months with the contents of the text file, one to delete from the list months the months that do not contain the letter r, and one to display the names of the months remaining in the list.

Can you please solve this in python. Thank you for your help

Answer 1

Here is the completed code for this problem. Comments are included, go through it, learn how things work and let me know if you have any doubts or if you need anything to change. If you are satisfied with the solution, please rate the answer. Thanks

#code

#initializing a global list to empty

months=[]

#method to load months from file Months.txt and fill the list

def load_months():

    #opening file, make sure you have the file in same directory

    file=open('Months.txt')

    #looping through each line

    for line in file:

        #removing newline character from file

        line=line.strip()

        #appending to months list

        months.append(line)

#method to delete months without the letter r from the list

def delete_months_without_r():

    index=0 #index of current element

    #looping as long as index is valid in the list

    while index<len(months):

        #checking if 'r' is present in month name or not

        if 'r' not in months[index]:

            #the letter 'r' does not exist on current month name, so removing the month

            months.pop(index)

        else:

            #updating index to check the next element

            index+=1

#method to display the months list

def display_months():

    #looping and printing months

    for i in months:

        print(i)

#main method

def main():

    #loading months, removing months without r and displaying results

    load_months()

    delete_months_without_r()

    display_months()

   

#invoking the main()

main()

#output

January

February

March

April

September

October

November

December