old_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  from __future__ import absolute_import, print_function
  
  import sys
  
  py3k = sys.version_info[:2] >= (3, 0)
  
  
  if py3k:
      string_types = str,
  
      def cmp(a, b):
          return (a > b) - (a < b)
  
      def b(s):
          return s.encode("latin-1")
  
      from urllib.parse import quote, quote_plus, urlencode
      from urllib.parse import urlparse, parse_qs
  
      from urllib.request import Request, urlopen
      from urllib.error import URLError
  
  else:
      string_types = basestring,
  
      cmp = cmp
  
      def b(s):
          return s
  
      from urllib import quote, quote_plus, urlencode
  
      from urlparse import urlparse, parse_qs
  
      from urllib2 import Request, urlopen, URLError
  
  
new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  from __future__ import absolute_import, print_function
  
  import sys
  
  py3k = sys.version_info[:2] >= (3, 0)
  
  
  if py3k:
      string_types = str,
  
      def cmp(a, b):
          return (a > b) - (a < b)
  
      def b(s):
          return s.encode("latin-1")
  
      from urllib.parse import quote, quote_plus, urlencode
      from urllib.parse import urlparse, parse_qs, parse_qsl
  
      from urllib.request import Request, urlopen
      from urllib.error import URLError
  
  else:
      string_types = basestring,
  
      cmp = cmp
  
      def b(s):
          return s
  
      from urllib import quote, quote_plus, urlencode
  
      from urlparse import urlparse, parse_qs, parse_qsl
  
      from urllib2 import Request, urlopen, URLError
  
  
subject: Fix missing import