old_contents: #!/usr/bin/env python
  
new_contents: #!/usr/bin/env python
  
  def assemble_bouncer_config(parts):
      pass
  
  def read_parts_from_stdin():
      pass
  
  parts = read_parts_from_stdin()
  bouncer_config = assemble_bouncer_config(parts)
  write_bouncer_config(bouncer_config, '/home/mlab/data/bouncer.yaml')
  
subject: Add outline of makeconfig.py