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letter frequency from a string in a file using python

If you want the count of all the letters in the file use a collections.Counter dict:

from collections import Counter
c = Counter()
with open("input.txt") as f:
    for line in f:
Counter({'e': 16, 'r': 12, 'd': 8, 'a': 6, 't': 6,
'n': 4, 'q': 4, 's': 4, 'u': 4, 'w': 4, 'i': 2,
'o': 2, 'p': 2})

To get total just multiply by the times it appears:

from collections import Counter
c = Counter()
with open("input.txt") as f:
    for line in f:
        word, year, count = line.split()

 print(c["a"] / float(sum(c.values())))

Categories : Python

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