def read_null_list(start, end, addr_space):
 return null_list(read_addr_range(start, end, addr_space), (end - start))

def read_null_list ( start , end , addr_space ) : return null_list ( read_addr_range ( start , end , addr_space ) , ( end - start ) )
read a number of pages and split it on 0-bytes .