old_contents: #!/usr/bin/env python
  
  from __future__ import print_function
  
  def main():
  	print("Running Main Loop!")
  
  if __name__ == "__main__":
  	print("Hello Server!")
  	main()
  	print("Goodbye Server!")
  
new_contents: #!/usr/bin/env python
  
  import signal
  import pyuv as uv
  
  from __future__ import print_function
  
  def on_read(handle, ip_port, flags, data, error):
  	if data is not None:
  		handle.send(ip_port, data)
  
  def signal_cb():
  	pass
  
  from __future__ import print_function
  
  def main():
  	print("Running Main Loop!")
  
  if __name__ == "__main__":
  	print("Hello Server!")
  	main()
  	print("Goodbye Server!")
  
subject: Update main.py