new_contents: #!/usr/bin/python3.4
  # -*-coding:Utf-8 -*
  '''module to manage Renderlayer group'''
  import xml.etree.ElementTree as xmlMod
  import os, re
  
  class RLGroupList:
  	'''class to manage Renderlayer group'''
  	
  	
  	def __init__(self, xml= None):
  		'''initialize Renderlayer group with default value or values extracted from an xml object'''
  		if xml is None:
  			self.defaultInit()
  		else:
  			self.fromXml(xml)
  	
  	
  	
  	
  	
  	def defaultInit(self):
  		'''initialize Renderlayer group with default value'''
  		
  	
  	
  	
  	
  	
  	def fromXml(self, xml):
  		'''initialize Renderlayer group with values extracted from an xml object'''
  		
  	
  	
  	
  	
  	
  	def toXml(self):
  		'''export Renderlayer group into xml syntaxed string'''
  		txt = '<RenderlayerGroup />\n'
  		
  		return txt
  	
  	
  	
  	
  	
  	def see(self, log, versions):
  		'''menu to explore and edit Renderlayer group settings'''
  		change = False
  		log.menuIn('')
  		
  		while True:
  			
  			log.print()
  			
  			
  			
  			print('''\n\n        Menu :
  0- Save And Quit
  
  ''')
  			
  			choice = input('Action?').strip().lower()
  			
  			if choice in ['0', 'q', 'quit', 'cancel']:
  				log.menuOut()
  				return change
  			else:
  				log.error('Unvalid menu choice', False)
  		
  	
  	
  	
  	
  	
  	def list(self, index = False):
  		'''A method to list keyword of the Renderlayer Group'''
  		
  	
  	
  	
  	
  	
  	def choose(self, log):
  		'''A method to choose a keyword'''
  		
  	
  	
  	
  	
  	
  	
  	def add(self, log, versions):
  		'''A method to add a new keyword'''
  		
  	
  	
  	
  	
  	
  	def remove(self, log):
  		'''A method to remove a keyword'''
  		
  	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  
subject: create renderlayer group class to manage corresponding keyword