127 lines
5.3 KiB
Plaintext
127 lines
5.3 KiB
Plaintext
---
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title: UnrollCustomDefinitions
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description: API reference for qiskit.transpiler.passes.UnrollCustomDefinitions
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in_page_toc_min_heading_level: 1
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python_api_type: class
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python_api_name: qiskit.transpiler.passes.UnrollCustomDefinitions
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---
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# UnrollCustomDefinitions
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<Class id="qiskit.transpiler.passes.UnrollCustomDefinitions" isDedicatedPage={true} github="https://github.com/qiskit/qiskit/tree/stable/0.46/qiskit/transpiler/passes/basis/unroll_custom_definitions.py" signature="qiskit.transpiler.passes.UnrollCustomDefinitions(*args, **kwargs)" modifiers="class">
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Bases: [`TransformationPass`](qiskit.transpiler.TransformationPass "qiskit.transpiler.basepasses.TransformationPass")
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Unrolls instructions with custom definitions.
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Unrolls instructions with custom definitions.
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**Parameters**
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* **equivalence\_library** ([*EquivalenceLibrary*](qiskit.circuit.EquivalenceLibrary "qiskit.circuit.EquivalenceLibrary")) – The equivalence library which will be used by the BasisTranslator pass. (Instructions in this library will not be unrolled by this pass.)
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* **basis\_gates** (*Optional\[*[*list*](https://docs.python.org/3/library/stdtypes.html#list "(in Python v3.12)")*\[*[*str*](https://docs.python.org/3/library/stdtypes.html#str "(in Python v3.12)")*]]*) – Target basis names to unroll to, e.g. `['u3', 'cx']`. Ignored if `target` is also specified.
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* **target** (*Optional\[*[*Target*](qiskit.transpiler.Target "qiskit.transpiler.Target")*]*) –
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**The [`Target`](qiskit.transpiler.Target "qiskit.transpiler.Target") object corresponding to the compilation**
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target. When specified, any argument specified for `basis_gates` is ignored.
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**min\_qubits (int): The minimum number of qubits for operations in the input**
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dag to translate.
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## Attributes
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### is\_analysis\_pass
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<Attribute id="qiskit.transpiler.passes.UnrollCustomDefinitions.is_analysis_pass">
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Check if the pass is an analysis pass.
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If the pass is an AnalysisPass, that means that the pass can analyze the DAG and write the results of that analysis in the property set. Modifications on the DAG are not allowed by this kind of pass.
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</Attribute>
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### is\_transformation\_pass
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<Attribute id="qiskit.transpiler.passes.UnrollCustomDefinitions.is_transformation_pass">
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Check if the pass is a transformation pass.
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If the pass is a TransformationPass, that means that the pass can manipulate the DAG, but cannot modify the property set (but it can be read).
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</Attribute>
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## Methods
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### execute
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<Function id="qiskit.transpiler.passes.UnrollCustomDefinitions.execute" signature="execute(passmanager_ir, state, callback=None)">
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Execute optimization task for input Qiskit IR.
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**Parameters**
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* **passmanager\_ir** ([*Any*](https://docs.python.org/3/library/typing.html#typing.Any "(in Python v3.12)")) – Qiskit IR to optimize.
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* **state** ([*PassManagerState*](qiskit.passmanager.PassManagerState "qiskit.passmanager.compilation_status.PassManagerState")) – State associated with workflow execution by the pass manager itself.
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* **callback** ([*Callable*](https://docs.python.org/3/library/collections.abc.html#collections.abc.Callable "(in Python v3.12)") *| None*) – A callback function which is caller per execution of optimization task.
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**Returns**
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Optimized Qiskit IR and state of the workflow.
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**Return type**
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[tuple](https://docs.python.org/3/library/stdtypes.html#tuple "(in Python v3.12)")\[[*Any*](https://docs.python.org/3/library/typing.html#typing.Any "(in Python v3.12)"), [qiskit.passmanager.compilation\_status.PassManagerState](qiskit.passmanager.PassManagerState "qiskit.passmanager.compilation_status.PassManagerState")]
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</Function>
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### name
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<Function id="qiskit.transpiler.passes.UnrollCustomDefinitions.name" signature="name()">
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Name of the pass.
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**Return type**
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[str](https://docs.python.org/3/library/stdtypes.html#str "(in Python v3.12)")
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</Function>
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### run
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<Function id="qiskit.transpiler.passes.UnrollCustomDefinitions.run" signature="run(dag)">
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Run the UnrollCustomDefinitions pass on dag.
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**Parameters**
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**dag** ([*DAGCircuit*](qiskit.dagcircuit.DAGCircuit "qiskit.dagcircuit.DAGCircuit")) – input dag
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**Raises**
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* [**QiskitError**](exceptions#qiskit.exceptions.QiskitError "qiskit.exceptions.QiskitError") – if unable to unroll given the basis due to undefined
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* **decomposition rules**\*\* (****such as a bad basis****) or \*\***excessive recursion.** –
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**Returns**
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output unrolled dag
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**Return type**
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[DAGCircuit](qiskit.dagcircuit.DAGCircuit "qiskit.dagcircuit.DAGCircuit")
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</Function>
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### update\_status
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<Function id="qiskit.transpiler.passes.UnrollCustomDefinitions.update_status" signature="update_status(state, run_state)">
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Update workflow status.
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**Parameters**
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* **state** ([*PassManagerState*](qiskit.passmanager.PassManagerState "qiskit.passmanager.compilation_status.PassManagerState")) – Pass manager state to update.
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* **run\_state** (*RunState*) – Completion status of current task.
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**Returns**
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Updated pass manager state.
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**Return type**
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[*PassManagerState*](qiskit.passmanager.PassManagerState "qiskit.passmanager.compilation_status.PassManagerState")
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</Function>
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</Class>
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