code: def pipe_uniq(context=None, _INPUT=None, conf=None, **kwargs):
      
      funcs = get_splits(None, conf, **cdicts(opts, kwargs))
      pieces, _pass = funcs[0](), funcs[2]()
      _OUTPUT = _INPUT if _pass else unique_items(_INPUT, pieces.field)
      return _OUTPUT
docs: An operator that filters out non unique items according to the specified
      field. Not loopable.
  
      Parameters
      ----------
      context : pipe2py.Context object
      _INPUT : pipe2py.modules pipe like object (iterable of items)
      kwargs -- other inputs, e.g. to feed terminals for rule values
      conf : {'field': {'type': 'text', 'value': <field to be unique>}}
  
      Returns
      -------
      _OUTPUT : generator of unique items