def print_ifs_info(router):
    if_names, if_speeds = router.get_ifs_info()  ##Functions asked from Gigi
    for i, interface_name in enumerate(if_names):
        print interface_name, ",", if_speeds[i]
    return if_names, if_speeds
def print_ifs_info(router):
	"""Given the object router in input, this function returns two lists: the interfaces names list and the speeds interfaces list"""
        if_names, if_speeds=router.get_ifs_info() 
        for i, interface_name in enumerate(if_names):
                print interface_name, ',',if_speeds[i]
	return if_names, if_speeds