find the number of occurrence of letter in a txt file using python

Question

I need to read the letter from a .txt file and print the number of occurrence in txt file. so far i have been able to print the content in one line but having issue with the cou

Answer 1

Here you go. Hopefully your professor will ask you to explain your work.

grades = open('grades.txt').read().split()
for grade in sorted(set(grades),
                    key=lambda x: ord(x[0])*3-('+'in x)+('-'in x)):
    print ('{} students got {}'.format(grades.count(grade), grade))