29 lines
857 B
Plaintext
29 lines
857 B
Plaintext
---
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title: active_backend
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description: API reference for qiskit.pulse.builder.active_backend
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in_page_toc_min_heading_level: 1
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python_api_type: function
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python_api_name: qiskit.pulse.builder.active_backend
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---
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# qiskit.pulse.builder.active\_backend
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<Function id="qiskit.pulse.builder.active_backend" isDedicatedPage={true} github="https://github.com/qiskit/qiskit/tree/stable/0.18/qiskit/pulse/builder.py" signature="active_backend()">
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Get the backend of the currently active builder context.
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**Returns**
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**The active backend in the currently active**
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builder context.
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**Return type**
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Union\[[Backend](qiskit.providers.Backend "qiskit.providers.Backend"), [BaseBackend](qiskit.providers.BaseBackend "qiskit.providers.BaseBackend")]
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**Raises**
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**exceptions.BackendNotSet** – If the builder does not have a backend set.
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</Function>
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