old_contents: #!/bin/env/python
  # -*- coding: utf-8
  
  import os
  
  from subprocess import call
  
  if __name__ == '__main__':
      if 'TRAVIS' in os.environ:
          rc = call('coveralls')
          raise SystemExit(rc)
  
new_contents: #!/bin/env/python
  # -*- coding: utf-8
  
  import os
  
  from subprocess import call
  
  if __name__ == '__main__':
      if 'TRAVIS' in os.environ:
          print("Calling coveralls")
          rc = call('coveralls')
          raise SystemExit(rc)
  
subject: Add a check that coveralls is actually called