Buildin Module Python Tutorial

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  4. Uses the system function to clear the screen
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 )