code: def appendhdf5(table, source, where=None, name=None):
      
  
      with _get_hdf5_table(source, where, name, mode='a') as h5table:
  
          # load the data
          _insert(table, h5table)
docs: As :func:`petl.io.hdf5.tohdf5` but don't truncate the target table before
      loading.