---
title: FermionicDAGToCircuit (latest version)
description: API reference for qiskit_fermions.transpiler.FermionicDAGToCircuit in the latest version of qiskit-fermions
source: https://eu-de.quantum.cloud.ibm.com/docs/en/api/qiskit-fermions/transpiler-fermionic-dag-to-circuit
---

# FermionicDAGToCircuit

*class* `FermionicDAGToCircuit`

Bases: [`GenericPass`](/docs/api/qiskit/qiskit.passmanager.GenericPass)\[[`DAGCircuit`](/docs/api/qiskit/qiskit.dagcircuit.DAGCircuit), [`FermionicCircuit`](/docs/api/qiskit-fermions/circuit-fermionic-circuit "qiskit_fermions.circuit.fermionic_circuit.FermionicCircuit")]

Converts a [`FermionicDAGCircuit`](/docs/api/qiskit-fermions/circuit-fermionic-dag-circuit "qiskit_fermions.circuit.FermionicDAGCircuit") to a [`FermionicCircuit`](/docs/api/qiskit-fermions/circuit-fermionic-circuit "qiskit_fermions.circuit.FermionicCircuit").

## Methods

### run

`run(passmanager_ir)`

Runs this conversion pass.

**Parameters**

**passmanager\_ir** ([*DAGCircuit*](/docs/api/qiskit/qiskit.dagcircuit.DAGCircuit)) – the input circuit to convert.

**Returns**

The converted circuit.

**Return type**

[*FermionicCircuit*](/docs/api/qiskit-fermions/circuit-fermionic-circuit "qiskit_fermions.circuit.fermionic_circuit.FermionicCircuit")

**Inherited Methods**

### execute

`execute(passmanager_ir, state, callback=None)`

Execute optimization task for input Qiskit IR.

**Parameters**

- **passmanager\_ir** (*IR*) – Qiskit IR to optimize.
- **state** ([*PassManagerState*](/docs/api/qiskit/qiskit.passmanager.PassManagerState)) – State associated with workflow execution by the pass manager itself.
- **callback** ([*Callable*](https://docs.python.org/3/library/collections.abc.html#collections.abc.Callable)*\[\[*[*Task*](/docs/api/qiskit/qiskit.passmanager.Task)*, IR\_OUT,* [*PropertySet*](/docs/api/qiskit/qiskit.passmanager.PropertySet)*,* [*float*](https://docs.python.org/3/library/functions.html#float)*,* [*int*](https://docs.python.org/3/library/functions.html#int)*], None] | None*) – A callback function which is called per execution of optimization task.

**Returns**

Optimized Qiskit IR and state of the workflow.

**Return type**

[tuple](https://docs.python.org/3/library/stdtypes.html#tuple)\[*IR\_OUT*, [*PassManagerState*](/docs/api/qiskit/qiskit.passmanager.PassManagerState)]

### name

`name()`

Name of the pass.

**Return type**

[str](https://docs.python.org/3/library/stdtypes.html#str)

### update\_status

`update_status(state, run_state)`

Update workflow status.

**Parameters**

- **state** ([*PassManagerState*](/docs/api/qiskit/qiskit.passmanager.PassManagerState)) – Pass manager state to update.
- **run\_state** (*RunState*) – Completion status of current task.

**Returns**

Updated pass manager state.

**Return type**

[*PassManagerState*](/docs/api/qiskit/qiskit.passmanager.PassManagerState)