Uses the system function to clear the screen. : os « Buildin Module « Python Tutorial

1. Python Tutorial
2. Buildin Module
3. os

import os
import sys

def printInstructions( clearCommand ):
   os.system( clearCommand )  

if os.name == "nt" or os.name == "dos":  
   clearCommand = "cls"
   print "You are using a Windows system."
elif os.name == "posix":  # UNIX-compatible system
   clearCommand = "clear"
   print "You are using a UNIX-compatible system."
else:
   sys.exit( "Unsupported OS" )


printInstructions( clearCommand )