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qiskit.transpiler.FlowController

class FlowController(passes, options, **partial_controller)[source]

Base class for multiple types of working list.

This class is a base class for multiple types of working list. When you iterate on it, it returns the next pass to run.

__init__(passes, options, **partial_controller)[source]

Initialize self. See help(type(self)) for accurate signature.

Methods

__init__(passes, options, **partial_controller)

Initialize self.

add_flow_controller(name, controller)

Adds a flow controller.

controller_factory(passes, options, …)

Constructs a flow controller based on the partially evaluated controller arguments.

dump_passes()

Fetches the passes added to this flow controller.

remove_flow_controller(name)

Removes a flow controller.

Attributes

registered_controllers

classmethod add_flow_controller(name, controller)[source]

Adds a flow controller.

Parameters
  • name (string) – Name of the controller to add.

  • controller (type(FlowController)) – The class implementing a flow controller.

classmethod controller_factory(passes, options, **partial_controller)[source]

Constructs a flow controller based on the partially evaluated controller arguments.

Parameters
  • passes (list[BasePass]) – passes to add to the flow controller.

  • options (dict) – PassManager options.

  • **partial_controller (dict) – Partially evaluated controller arguments in the form {name:partial}

Raises

TranspilerError – When partial_controller is not well-formed.

Returns

A FlowController instance.

Return type

FlowController

dump_passes()[source]

Fetches the passes added to this flow controller.

Returns

{‘options’: self.options, ‘passes’: [passes], ‘type’: type(self)}

Return type

dict

classmethod remove_flow_controller(name)[source]

Removes a flow controller.

Parameters

name (string) – Name of the controller to remove.

Raises

KeyError – If the controller to remove was not registered.

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