# ngraph.opset5.ops.loop¶

ngraph.opset5.ops.loop(trip_count: Union[_pyngraph.Node, int, float, numpy.ndarray], execution_condition: Union[_pyngraph.Node, int, float, numpy.ndarray], inputs: List[_pyngraph.Node], graph_body: ngraph.utils.tensor_iterator_types.GraphBody, slice_input_desc: , merged_input_desc: , invariant_input_desc: , body_output_desc: , concat_output_desc: , body_condition_output_idx: int, current_iteration_input_idx: int = - 1, name: Optional[str] = None)_pyngraph.Node

Perform recurrent execution of the network described in the body, iterating through the data.

Parameters
• trip_count – A scalar or 1D tensor with 1 element specifying maximum number of iterations.

• execution_condition – A scalar or 1D tensor with 1 element specifying whether to execute the first iteration or not.

• inputs – The provided to TensorIterator operator.

• graph_body – The graph representing the body we execute.

• slice_input_desc – The descriptors describing sliced inputs, that is nodes representing tensors we iterate through, processing single data slice in one iteration.

• merged_input_desc – The descriptors describing merged inputs, that is nodes representing variables with initial value at first iteration, which may be changing through iterations.

• invariant_input_desc – The descriptors describing invariant inputs, that is nodes representing variable with persistent value through all iterations.

• body_output_desc – The descriptors describing body outputs from specified iteration.

• concat_output_desc – The descriptors describing specified output values through all the iterations concatenated into one node.

• body_condition_output_idx – Determines the purpose of the corresponding result in the graph_body. This result will determine the dynamic exit condition. If the value of this result is False, then iterations stop.

• current_iteration_input_idx – Determines the purpose of the corresponding parameter in the graph_body. This parameter will be used as an iteration counter. Optional.

Return:

The new node which performs Loop.