code: def load(self, addr, length=1):
          
          if addr is None:
              return
          elif not isinstance(addr, Iterable):
              self.first_level.load(addr, length=length)
          else:
              self.first_level.iterload(addr, length=length)
docs: Load one or more addresses.
  
          :param addr: byte address of load location
          :param length: All address from addr until addr+length (exclusive) are
                         loaded (default: 1)