mirror of https://github.com/Qiskit/qiskit.git
34 lines
1.4 KiB
YAML
34 lines
1.4 KiB
YAML
---
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upgrade:
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- |
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The deprecated ``circuit_cregs`` argument to the constructor for the
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:class:`~.InstructionSet` class has been removed. It was deprecated in the
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0.19.0 release. If you were using this argument and manually constructing
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an :class:`~.InstructionSet` object (which should be quite uncommon as it's
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mostly used internally) you should pass a callable to the
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``resource_requester`` keyword argument instead. For example::
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from qiskit.circuit import Clbit, ClassicalRegister, InstructionSet
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from qiskit.circuit.exceptions import CircuitError
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def my_requester(bits, registers):
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bits_set = set(bits)
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bits_flat = tuple(bits)
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registers_set = set(registers)
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def requester(specifier):
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if isinstance(specifer, Clbit) and specifier in bits_set:
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return specifier
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if isinstance(specifer, ClassicalRegster) and specifier in register_set:
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return specifier
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if isinstance(specifier, int) and 0 <= specifier < len(bits_flat):
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return bits_flat[specifier]
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raise CircuitError(f"Unknown resource: {specifier}")
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return requester
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my_bits = [Clbit() for _ in [None]*5]
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my_registers = [ClassicalRegister(n) for n in range(3)]
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InstructionSet(resource_requester=my_requester(my_bits, my_registers))
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