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Make name a required param in backend() #1636

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Apr 25, 2024
Merged

Make name a required param in backend() #1636

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9 changes: 9 additions & 0 deletions qiskit_ibm_runtime/qiskit_runtime_service.py
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Original file line number Diff line number Diff line change
Expand Up @@ -775,6 +775,15 @@ def backend(
QiskitBackendNotFoundError: if no backend could be found.
"""
# pylint: disable=arguments-differ, line-too-long
if not name:
warnings.warn(
(
"The `name` parameter will be required in a future release no sooner than "
"3 months after the release of qiskit-ibm-runtime 0.24.0 ."
),
DeprecationWarning,
stacklevel=2,
)
backends = self.backends(name, instance=instance)
if not backends:
cloud_msg_url = ""
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3 changes: 3 additions & 0 deletions release-notes/unreleased/1147.deprecation.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1,3 @@
``name`` will now be a required parameter in
`backend() https://docs.quantum.ibm.com/api/qiskit-ibm-runtime/qiskit_ibm_runtime.QiskitRuntimeService#backend`__.
``backend()`` will no longer return the first backend out of all backends if ``name`` is not provided.
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