old_contents: #!/usr/bin/env python
  import sys
  
  import gfxprim.core as core
  import gfxprim.loaders as loaders
  import gfxprim.filters as filters
  
  def main():
      if len(sys.argv) != 3:
          print("USAGE: %s imput_image output_image" % sys.argv[0]);
          sys.exit(1)
  
      # Turns on debug messages
      core.SetDebugLevel(10);
  
      # Load Image
      src = loaders.LoadImage(sys.argv[1], None)
      # Rotate by 90 degrees
      res = filters.FilterRotate90Alloc(src, None)
      # Save Image
      res.Save(sys.argv[2])
  
  if __name__ == '__main__':
      main()
  
new_contents: #!/usr/bin/env python
  import sys
  
  import gfxprim.core as core
  import gfxprim.loaders as loaders
  import gfxprim.filters as filters
  
  def main():
      if len(sys.argv) != 3:
          print("USAGE: %s imput_image output_image" % sys.argv[0]);
          sys.exit(1)
  
      # Turns on debug messages
      core.SetDebugLevel(10);
  
      # Load Image
      src = loaders.LoadImage(sys.argv[1], None)
      # Rotate by 90 degrees
      res = filters.FilterRotate90_Alloc(src, None)
      # Save Image
      res.Save(sys.argv[2])
  
  if __name__ == '__main__':
      main()
  
subject: Fix python example after the API update.