pyFindWordFrequency

# Read a text file and print out a list of the words in order of frequency of occurrence.

fin = open('py4e-words.txt')
allfile = fin.read()            # read all lines at once
wordlist = allfile.split()      # split the whole of the text into words
wordset = set(wordlist)         # create a set (unique set of words from the text)

wdict = {}
# Create a dictionary of each word and its frequency
for word in wordset:
    wdict[word] = wordlist.count(word)

# Create a list from the dictionary and sort it by frequency
blist = []
for word, ctr in wdict.items():
    blist.append((ctr, word))      # Each list entry is a tuple containing the count and the word

# Sort the list in reverse order (most frequent first)
blist.sort(reverse=True)

# Print the sorted list
for tup in blist:
    print(tup[1].ljust(14), tup[0])

# Top entries in the results:-
# to             16
# the            6
# we             5
# our            5
# of             5
# do             5
# computers      5
# and            5
# you            4