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Add a contextmanager and reverse default option#12

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Ericgig merged 4 commits intoqutip:mainfrom
Ericgig:add_context
Oct 16, 2025
Merged

Add a contextmanager and reverse default option#12
Ericgig merged 4 commits intoqutip:mainfrom
Ericgig:add_context

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@Ericgig Ericgig commented Oct 10, 2025

The set_as_default as a new parameter: reverse which restore qutip's core default to undo the operation.

The backend can also be used with context:

>>> with qutip_cuquantum.CuQuantumBackend(cudm_ctx):
>>>     in_ctx = qutip.num(4)
>>> 
>>> out_ctx = qutip.num(4)
>>> 
>>> print(in_ctx.dtype, out_ctx.dtype)
<class 'qutip_cuquantum.operator.CuOperator'> <class 'qutip.core.data.dia.Dia'>

@Ericgig Ericgig merged commit cb3aa17 into qutip:main Oct 16, 2025
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@Ericgig Ericgig deleted the add_context branch October 16, 2025 14:55
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