Modernize Python 2 code to get ready for Python 3

06-code-golf/tf-06-1.py

@@ -1,8 +1,9 @@
 #!/usr/bin/env python
+from __future__ import print_function
 import re, string, sys
 
 stops = set(open("../stop_words.txt").read().split(",") + list(string.ascii_lowercase))
 words = [x.lower() for x in re.split("[^a-zA-Z]+", open(sys.argv[1]).read()) if len(x) > 0 and x.lower() not in stops]
 unique_words = list(set(words))
-unique_words.sort(lambda x, y: cmp(words.count(y), words.count(x)))
-print "\n".join(["%s - %s" % (x, words.count(x)) for x in unique_words[:25]])
+unique_words.sort(key=lambda x: words.count(x), reverse=True)
+print("\n".join(["%s - %s" % (x, words.count(x)) for x in unique_words[:25]]))