count letter from txt file in python -


this question has answer here:

files contain below letter. a- c f c c b- b a a- b b+ b+ b+ c c- b- a f. need read file , below output. 

6 students got 2 students got a- 3 students got b+

and on, far able go through file not able count sting, can 1 please guide me. 

infile = open('grades.txt')   content = infile.read()  char in content:     print (char, end=' ')

i output below

a - c f c c b - b - b b + b + b + c c - b - f

can please guide me how can count occurance.

thanks.

since looks homework problem i'll give hint.

c=counter("a a- c f c c b- b a a- b b+ b+ b+ c c- b- a f".split()) c.most_common() [('a', 6), ('c', 4), ('b+', 3), ('b', 2), ('f', 2), ('b-', 2), ('a-', 2), ('c-', 1)]

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