class qiskit.transpiler.passes.CheckCXDirection(*args, **kwargs)[source]#

Bases: CheckGateDirection

Deprecated: use qiskit.transpiler.passes.CheckGateDirection pass instead.

Deprecated since version 0.21.0: The class qiskit.transpiler.passes.utils.check_cx_direction.CheckCXDirection is deprecated as of qiskit-terra 0.21.0. It will be removed no earlier than 3 months after the release date. Instead, use the more generic CheckGateDirection pass.



Check if the pass is an analysis pass.

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.


Check if the pass is a transformation pass.

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).



Return the name of the pass.


Run the CheckGateDirection pass on dag.

If dag is mapped and the direction is correct the property is_direction_mapped is set to True (or to False otherwise).


dag (DAGCircuit) – DAG to check.