88 lines
3.0 KiB
Plaintext
88 lines
3.0 KiB
Plaintext
---
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title: DoWhileController
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description: API reference for qiskit.transpiler.DoWhileController
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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.DoWhileController
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---
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# DoWhileController
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<Class id="qiskit.transpiler.DoWhileController" isDedicatedPage={true} github="https://github.com/qiskit/qiskit/tree/stable/0.20/qiskit/transpiler/runningpassmanager.py" signature="DoWhileController(passes, options=None, do_while=None, **partial_controller)" modifiers="class">
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Bases: `qiskit.transpiler.runningpassmanager.FlowController`
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Implements a set of passes in a do-while loop.
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## Methods
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### add\_flow\_controller
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<Function id="qiskit.transpiler.DoWhileController.add_flow_controller" signature="DoWhileController.add_flow_controller(name, controller)" modifiers="classmethod">
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Adds a flow controller.
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**Parameters**
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* **name** (*string*) – Name of the controller to add.
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* **controller** (*type(*[*FlowController*](qiskit.transpiler.FlowController "qiskit.transpiler.FlowController")*)*) – The class implementing a flow controller.
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</Function>
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### controller\_factory
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<Function id="qiskit.transpiler.DoWhileController.controller_factory" signature="DoWhileController.controller_factory(passes, options, **partial_controller)" modifiers="classmethod">
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Constructs a flow controller based on the partially evaluated controller arguments.
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**Parameters**
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* **passes** (*list\[BasePass]*) – passes to add to the flow controller.
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* **options** (*dict*) – PassManager options.
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* **\*\*partial\_controller** (*dict*) – Partially evaluated controller arguments in the form \{name:partial}
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**Raises**
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[**TranspilerError**](qiskit.transpiler.TranspilerError "qiskit.transpiler.TranspilerError") – When partial\_controller is not well-formed.
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**Returns**
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A FlowController instance.
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**Return type**
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[FlowController](qiskit.transpiler.FlowController "qiskit.transpiler.FlowController")
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</Function>
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### dump\_passes
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<Function id="qiskit.transpiler.DoWhileController.dump_passes" signature="DoWhileController.dump_passes()">
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Fetches the passes added to this flow controller.
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**Returns**
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\{‘options’: self.options, ‘passes’: \[passes], ‘type’: type(self)}
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**Return type**
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dict
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</Function>
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### remove\_flow\_controller
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<Function id="qiskit.transpiler.DoWhileController.remove_flow_controller" signature="DoWhileController.remove_flow_controller(name)" modifiers="classmethod">
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Removes a flow controller.
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**Parameters**
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**name** (*string*) – Name of the controller to remove.
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**Raises**
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**KeyError** – If the controller to remove was not registered.
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</Function>
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## Attributes
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### registered\_controllers
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<Attribute id="qiskit.transpiler.DoWhileController.registered_controllers" attributeValue="{'condition': <class 'qiskit.transpiler.runningpassmanager.ConditionalController'>, 'do_while': <class 'qiskit.transpiler.runningpassmanager.DoWhileController'>}" />
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</Class>
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