PYTHON:

Your program will take a file name from user and find out occurrences of characters (only alpha numeric characters) in the file. Upper and lower characters need to be counted as same characters for this assignment. You need to use Python Dictionary and tuples for this assignment. Your output should be sorted ascending order of frequencies. Do not use "Read" method to read the entire file in.

If user enters wrong information (wrong name of the file or non-existing file name), your program needs to display message and ask for correct input. Your program should not generate traceback message with any input. Write comment for program.

Sample files:

sample10-1.txt

Ch10-data2.txt

OUTPUT:

Please enter file name to process: sample10-1.txt [(1, 'b'), (1, 'm'), (1, 'v'), (1, 'x'), (1, 'y'), (3, 'g'), (3, 'w'), (4, 'c'), (6, 'd'), (6, 'f'), (6, 'u'), (11, 'p'), (13, 'r'), (14, 's'), (15, 'i'), (15, 'n'), (16, 'a'), (17, 'h'), (17, 'l'), (25, 't'), (30, 'o'), (33, 'e')]

Do you want to try another file? (y or n)y Please enter file name to process: Ch10-data2.txt [(2, 'x'), (4, 'v'), (4, 'y'), (5, 'b'), (7, 'c'), (7, 'k'), (8, 'p'), (9, 'g'), (10, 'f'), (10, 'm'), (10, 'w'), (13, 'd'), (14, 'l'), (14, 'r'), (15, 'h'), (16, 'u'), (17, 's'), (18, 'i'), (22, 'a'), (26, 'n'), (27, 'o'), (36, 't'), (40, 'e')]

Do you want to try another file? (y or n)n Thank you for playing.