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#!/usr/bin/env python
import fileinput
import re
from collections import defaultdict
word_requencies = defaultdict(int)
stop_words = ('all', 'am', 'an', 'and', 'are', 'as', 'at', 'be', 'been', 'but',
'by', 'could', 'do', 'for', 'from', 'had', 'have', 'he', 'her', 'him', 'his',
'if', 'in', 'is', 'it', 'me', 'must', 'my', 'no', 'not', 'of', 'on',
'or', 'said', 'she', 'so', 'that', 'the', 'their', 'them', 'there', 'they', 'this',
'to', 'was', 'were', 'what', 'when', 'which', 'will', 'with', 'would', 'you', 'your')
for line in fileinput.input():
line = re.sub(r"[^A-Za-z]", " ", line.rstrip()) # Replace non-letters with space.
words_on_line = line.split()
words_on_line = [word for word in words_on_line if len(word) > 1]
words_on_line = map(lambda s: s.lower(), words_on_line)
words_on_line = filter(lambda word: word not in stop_words, words_on_line)
for word in words_on_line:
word_requencies[word] += 1
def comparator(x, y):
# Sort tuples (word, freq) first according to freq, within the same freq in alphabetical order.
if x[1] == y[1]:
if x[0] == y[0]:
return 0
elif x[0] < y[0]:
return -1
return 1
elif x[1] < y[1]:
return 1
return -1
top_entries = sorted(word_requencies.items(), cmp=comparator)[:ENTRIES_TO_SHOW]
for item in top_entries:
print "%s\t- %s" % item