old_contents: def main():
      from mptracker.app import manager
      manager.run()
  
  
  if __name__ == '__main__':
      main()
  
new_contents: #!/usr/bin/env python
  
  
  def main():
      from mptracker.app import manager
      manager.run()
  
  
  if __name__ == '__main__':
      main()
  
subject: make manage.py executable