class_docstr: _KeyValueIOTensor
class_docstr_tok: ["_KeyValueIOTensor"]
docstr: Returns the specified piece of this IOTensor.
code: def __getitem__(self, key):
      """Returns the specified piece of this IOTensor."""
      return self._function(key)
  
imports: import tensorflow
label_desc: Use image node_id 3 for calling the _KeyValueIOTensor obj's underlying member method code with example usage: obj.__getitem__(key) and returns: self