Add dynamic circuits as a backends filter

qiskit_ibm_provider/ibm_backend_service.py

@@ -109,6 +109,7 @@ def backends(
         min_num_qubits: Optional[int] = None,
         input_allowed: Optional[Union[str, List[str]]] = None,
         instance: Optional[str] = None,
+        dynamic_circuits: Optional[bool] = None,
         **kwargs: Any,
     ) -> List[IBMBackend]:
         """Return all backends accessible via this account, subject to optional filtering.
@@ -127,6 +128,7 @@ def backends(
                 that support Qiskit Runtime. If a list is given, the backend must
                 support all types specified in the list.
             instance: The provider in the hub/group/project format.
+            dynamic_circuits: Filter by whether the backend supports dynamic circuits.
             **kwargs: Simple filters that specify a ``True``/``False`` criteria in the
                 backend configuration, backends status, or provider credentials.
                 An example to get the operational backends with 5 qubits::
@@ -166,6 +168,17 @@ def backends(
                     backends,
                 )
             )
+        if dynamic_circuits is not None:
+            backends = list(
+                filter(
+                    lambda b: (
+                        "qasm3" in getattr(b.configuration(), "supported_features", [])
+                    )
+                    == dynamic_circuits,
+                    backends,
+                )
+            )
+
         return filter_backends(backends, filters=filters, **kwargs)
 
     def jobs(

releasenotes/notes/qasm-filter-f9a5d66c28a21318.yaml

@@ -0,0 +1,6 @@
+---
+features:
+  - |
+    You can now use the ``dynamic_circuits`` parameter in
+    :meth:`qiskit_ibm_provider.ibm_backend_service.IBMBackendService.backends`
+    to find backends that support dynamic circuits.

test/integration/test_filter_backends.py

@@ -139,3 +139,9 @@ def test_filter_input_allowed(self):
                     self.assertTrue(
                         set(input_type) <= set(backend.configuration().input_allowed)
                     )
+
+    def test_filter_dynamic_circuits(self):
+        """Test filtering by dynamic ciruits."""
+        filtered = self.dependencies.provider.backends(dynamic_circuits=True)
+        for backend in filtered:
+            self.assertTrue("qasm3" in backend.configuration().supported_features)