code: def unpackdict(table, field, keys=None, includeoriginal=False,
                 samplesize=1000, missing=None):
      
  
      return UnpackDictView(table, field, keys=keys,
                            includeoriginal=includeoriginal,
                            samplesize=samplesize, missing=missing)
docs: Unpack dictionary values into separate fields. E.g.::
  
          >>> import petl as etl
          >>> table1 = [['foo', 'bar'],
          ...           [1, {'baz': 'a', 'quux': 'b'}],
          ...           [2, {'baz': 'c', 'quux': 'd'}],
          ...           [3, {'baz': 'e', 'quux': 'f'}]]
          >>> table2 = etl.unpackdict(table1, 'bar')
          >>> table2
          +-----+-----+------+
          | foo | baz | quux |
          +=====+=====+======+
          |   1 | 'a' | 'b'  |
          +-----+-----+------+
          |   2 | 'c' | 'd'  |
          +-----+-----+------+
          |   3 | 'e' | 'f'  |
          +-----+-----+------+
  
      See also :func:`petl.transform.unpacks.unpack`.