Add try/except when creating backend obj (#2048)

* Add try/except when creating backend obj * test pydantic version * Revert "test pydantic version" This reverts commit c882317. * add release note --------- Co-authored-by: ptristan3 <[email protected]>
Qiskit · Dec 5, 2024 · 5933153 · 5933153
1 parent 62735e3
commit 5933153
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Showing 2 changed files with 13 additions and 5 deletions.
diff --git a/qiskit_ibm_runtime/qiskit_runtime_service.py b/qiskit_ibm_runtime/qiskit_runtime_service.py
@@ -570,11 +570,17 @@ def _create_backend_obj(
         Raises:
             QiskitBackendNotFoundError: if the backend is not in the hgp passed in.
         """
-        if config := configuration_from_server_data(
-            raw_config=self._api_client.backend_configuration(backend_name),
-            instance=instance,
-            use_fractional_gates=use_fractional_gates,
-        ):
+        try:
+            config = configuration_from_server_data(
+                raw_config=self._api_client.backend_configuration(backend_name),
+                instance=instance,
+                use_fractional_gates=use_fractional_gates,
+            )
+        except Exception as ex:  # pylint: disable=broad-except
+            logger.warning("Unable to create retrieve configuration for %s. %s ", backend_name, ex)
+            return None
+
+        if config:
             if self._channel == "ibm_quantum":
                 if not instance:
                     for hgp in list(self._hgps.values()):

diff --git a/release-notes/unreleased/2048.bug.rst b/release-notes/unreleased/2048.bug.rst
@@ -0,0 +1,2 @@
+Invalid or non-existing backend configurations on the server will no longer 
+prevent all backends from being retrieved with ``service.backends()``.
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,2 @@
		Invalid or non-existing backend configurations on the server will no longer
		prevent all backends from being retrieved with ``service.backends()``.