iframe-proxy | Sunbelt Computer Software

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"""This module contains a code example related to
Think Python, 2nd Edition
by Allen Downey
http://thinkpython2.com
Copyright 2015 Allen Downey
License: http://creativecommons.org/licenses/by/4.0/
from __future__ import print_function, division
def most_frequent(s):
    """Sorts the letters in s in reverse order of frequency.
    s: string
    Returns: list of letters
    hist = make_histogram(s)
    for x, freq in hist.items():
        t.append((freq, x))
    t.sort(reverse=True)
    res = []
    for freq, x in t:
        res.append(x)
    return res
def make_histogram(s):
    """Make a map from letters to number of times they appear in s.
    s: string
    Returns: map from letter to frequency
    hist = {}
    for x in s:
        hist[x] = hist.get(x, 0) + 1
    return hist
def read_file(filename):
    """Returns the contents of a file as a string."""
    return open(filename).read()
if __name__ == '__main__':
    string = read_file('emma.txt')
    letter_seq = most_frequent(string)
    for x in letter_seq:
        print(x)

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