50 lines
1.5 KiB
Python
50 lines
1.5 KiB
Python
#!/usr/bin/env python
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import sys, re, operator, string
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# Auxiliary functions that can't be lambdas
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#
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def extract_words(obj, path_to_file):
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with open(path_to_file) as f:
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obj['data'] = f.read()
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pattern = re.compile('[\W_]+')
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data_str = ''.join(pattern.sub(' ', obj['data']).lower())
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obj['data'] = data_str.split()
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def load_stop_words(obj):
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with open('../stop_words.txt') as f:
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obj['stop_words'] = f.read().split(',')
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# add single-letter words
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obj['stop_words'].extend(list(string.ascii_lowercase))
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def increment_count(obj, w):
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obj['freqs'][w] = 1 if w not in obj['freqs'] else obj['freqs'][w]+1
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data_storage_obj = {
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'data' : [],
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'init' : lambda path_to_file : extract_words(data_storage_obj, path_to_file),
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'words' : lambda : data_storage_obj['data']
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}
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stop_words_obj = {
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'stop_words' : [],
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'init' : lambda : load_stop_words(stop_words_obj),
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'is_stop_word' : lambda word : word in stop_words_obj['stop_words']
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}
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word_freqs_obj = {
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'freqs' : {},
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'increment_count' : lambda w : increment_count(word_freqs_obj, w),
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'sorted' : lambda : sorted(word_freqs_obj['freqs'].iteritems(), key=operator.itemgetter(1), reverse=True)
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}
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data_storage_obj['init'](sys.argv[1])
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stop_words_obj['init']()
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for w in data_storage_obj['words']():
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if not stop_words_obj['is_stop_word'](w):
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word_freqs_obj['increment_count'](w)
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word_freqs = word_freqs_obj['sorted']()
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for (w, c) in word_freqs[0:25]:
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print w, ' - ', c
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