code: def accumulate_str(self, buf):
          '''add in some more bytes'''
          accum = self.crc
          import array
          bytes = array.array('B')
          bytes.fromstring(buf)
          self.accumulate(bytesf accumulate_str(self, buf):
          '''add in some more bytes'''
          accum = self.crc
          import array
          bytes = array.array('B')
          bytes.fromstring(buf)
          self.accumulate(bytes)
docs: add in some more bytes