How to use the pyulog.core.ULog.Data function in pyulog

if self._has_sync:
                                self._find_sync(header.msg_size)

                except IndexError:
                    if not self._file_corrupt:
                        print("File corruption detected while reading file data!")
                        self._file_corrupt = True

        except struct.error:
            pass #we read past the end of the file

        # convert into final representation
        while self._subscriptions:
            _, value = self._subscriptions.popitem()
            if len(value.buffer) > 0: # only add if we have data
                data_item = ULog.Data(value)
                self._data_list.append(data_item)