And this one too

19-plugins/plugins-src/words1.py

@@ -0,0 +1,14 @@
+import sys, re, string
+
+def extract_words(path_to_file):
+    with open(path_to_file) as f:
+        str_data = f.read()
+    pattern = re.compile('[\W_]+')
+    word_list = pattern.sub(' ', str_data).lower().split()
+
+    with open('../stop_words.txt') as f:
+        stop_words = f.read().split(',')
+    stop_words.extend(list(string.ascii_lowercase))
+
+    return [w for w in word_list if not w in stop_words]
+