old_contents: # -*- coding: utf-8 -*-
  
  __author__ = "Stavros Korokithakis"
  __email__ = "hi@stavros.io"
  __version__ = "0.9.3"
  
new_contents: # -*- coding: utf-8 -*-
  
  import sys
  
  if sys.version_info.major < 3:
      print("This program requires Python 3 and above to run.")
      sys.exit(1)
  
  __author__ = "Stavros Korokithakis"
  __email__ = "hi@stavros.io"
  __version__ = "0.9.3"
  
subject: Make catt refuse to install under 2 more