PYTHON PROGRAM

Not too sure how to go about writting this program please help!!

The input file looks as follows:

1:Qatar:98900 2:Liechtenstein:89400 3:Luxembourg:80600 4:Bermuda:69900 5:Singapore:59700 6:Jersey:57000 ...

and so on all the way to #228.

This is what I need to learn to do:

For this exercise, you will write a program that makes use of two dictionaries. The program should read the data in rawdata.txt into a dictionary whose keys are country names and whose values are per capita incomes. Also create another dictionary whose keys are letters A Z and whose values are sets of country names. Convert the country names to all uppercase for both dictionaries. Your program should prompt the user to enter an initial or a country names and then print the corresponding values.

If the user enters a string with only one letter (like A), the program should print all the countries that begin with that letter, If the user enters a string that contains more than one letter, print the corresponding value for that country if it exists or print Does not exist if invalid. Stop when the user enters quit.