code: def filtered_cell(cell, preserve_outputs, cell_metadata_filter):
      
      metadata = copy(cell.metadata)
      filter_metadata(metadata, cell_metadata_filter, _IGNORE_CELL_METADATA)
  
      filtered = {'cell_type': cell.cell_type,
                  'source': cell.source,
                  'metadata': metadata}
  
      if preserve_outputs:
          for key in ['execution_count', 'outputs']:
              if key in cell:
                  filtered[key] = cell[key]
  
      return filtered
docs: Cell type, metadata and source from given cell