- pass_manager_drawer(pass_manager, filename=None, style=None, raw=False)¶
Draws the pass manager.
This function needs pydot <https://github.com/erocarrera/pydot>, which in turn needs Graphviz <https://www.graphviz.org/>` to be installed.
pass_manager (PassManager) – the pass manager to be drawn
filename (str) – file path to save image to
style (dict or OrderedDict) – keys are the pass classes and the values are the colors to make them. An example can be seen in the DEFAULT_STYLE. An ordered dict can be used to ensure a priority coloring when pass falls into multiple categories. Any values not included in the provided dict will be filled in from the default dict
raw (Bool) – True if you want to save the raw Dot output not an image. The default is False.
an in-memory representation of the pass manager. Or None if no image was generated or PIL is not installed.
- Return type
PIL.Image or None
MissingOptionalLibraryError – when nxpd or pydot not installed.
VisualizationError – If raw=True and filename=None.
%matplotlib inline from qiskit import QuantumCircuit from qiskit.compiler import transpile from qiskit.transpiler import PassManager from qiskit.visualization import pass_manager_drawer from qiskit.transpiler.passes import Unroller circ = QuantumCircuit(3) circ.ccx(0, 1, 2) circ.draw() pass_ = Unroller(['u1', 'u2', 'u3', 'cx']) pm = PassManager(pass_) new_circ = pm.run(circ) new_circ.draw(output='mpl') pass_manager_drawer(pm, "passmanager.jpg")