old_contents: #!/usr/bin/env python
  
  from strobe import letter, setup, cleanup
  from time import sleep
  
  pin = 11
  
  setup(pin)
  
  for i in range(2):
      letter('-.--', pin)
      letter('-.--', pin)
      letter('--..', pin)
  
  cleanup()
  
new_contents: #!/usr/bin/env python
  
  from strobe import letter, setup, cleanup
  
  pin = 11
  setup(pin)
  for i in range(2):
      letter('-.--', pin)
      letter('-.--', pin)
      letter('--..', pin)
  cleanup()
  
subject: tidy up