# Pastebin ibSIXLd8
@pyrule
def clean_config(managed_object,config):
   cfg = []
   for c in config.split("\n"):
       if c.startswith(("! Last configuration change", 
                        "! NVRAM config last updated", 
                        "! No configuration change since last restart",
                        "ntp clock-period")):
           continue
       else:
           cfg += [c]
   return "\n".join(cfg)