code: def DictKeyColumns(d):
      'Return a list of Column objects from dictionary keys.'
      return [ColumnItem(k, k, type=deduceType(d[k])) for k in d.keys()f DictKeyColumns(d):
      'Return a list of Column objects from dictionary keys.'
      return [ColumnItem(k, k, type=deduceType(d[k])) for k in d.keys()]
docs: Return a list of Column objects from dictionary keys.