Massive renaming!

23-passive-aggressive/tf-23.py

@@ -0,0 +1,57 @@
+#!/usr/bin/env python
+import sys, re, operator, string
+
+#
+# The functions
+#
+def extract_words(path_to_file):
+    assert(type(path_to_file) is str), "I need a string! I quit!" 
+    assert(path_to_file), "I need a non-empty string! I quit!" 
+
+    with open(path_to_file) as f:
+        data = f.read()
+    pattern = re.compile('[\W_]+')
+    word_list = pattern.sub(' ', data).lower().split()
+    return word_list
+
+def remove_stop_words(word_list):
+    assert(type(word_list) is list), "I need a list! I quit!"
+
+    with open('../stop_words.txt') as f:
+        stop_words = f.read().split(',')
+    # add single-letter words
+    stop_words.extend(list(string.ascii_lowercase))
+    return [w for w in word_list if not w in stop_words]
+
+def frequencies(word_list):
+    assert(type(word_list) is list), "I need a list! I quit!"
+    assert(word_list != []), "I need a non-empty list! I quit!"
+
+    word_freqs = {}
+    for w in word_list:
+        if w in word_freqs:
+            word_freqs[w] += 1
+        else:
+            word_freqs[w] = 1
+    return word_freqs
+
+def sort(word_freqs):
+    assert(type(word_freqs) is dict), "I need a dictionary! I quit!"
+    assert(word_freqs != {}), "I need a non-empty dictionary! I quit!"
+
+    return sorted(word_freqs.items(), key=operator.itemgetter(1), reverse=True)
+
+#
+# The main function
+#
+try:
+    assert(len(sys.argv) > 1), "You idiot! I need an input file! I quit!"
+    word_freqs = sort(frequencies(remove_stop_words(extract_words(sys.argv[1]))))
+
+    assert(len(word_freqs) > 25), "OMG! Less than 25 words! I QUIT!"
+    for tf in word_freqs[0:25]:
+        print(tf[0], ' - ', tf[1])
+except Exception as e:
+        print("Something wrong: {0}".format(e))
+
+