mirror of https://github.com/Qiskit/qiskit.git
19 lines
1.0 KiB
YAML
19 lines
1.0 KiB
YAML
---
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upgrade_providers:
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- |
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Removed the abstract base classes ``Provider`` and ``ProviderV1`` which have been deprecated since Qiskit 1.1.0.
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The abstraction provided by these interface definitions were not providing a huge value, solely just the attributes
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``name``, ``backends``, and a ``get_backend()`` method. A _provider_, as a concept, will continue existing as a collection
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of backends. If you're implementing a provider currently you can adjust your
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code by simply removing ``ProviderV1`` as the parent class of your
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implementation. As part of this you probably would want to add an
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implementation of ``get_backend`` for backwards compatibility. For example::
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def get_backend(self, name=None, **kwargs):
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backend = self.backends(name, **kwargs)
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if len(backends) > 1:
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raise QiskitBackendNotFoundError("More than one backend matches the criteria")
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if not backends:
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raise QiskitBackendNotFoundError("No backend matches the criteria")
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return backends[0]
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