mirror of https://github.com/Qiskit/qiskit.git
31 lines
1.4 KiB
YAML
31 lines
1.4 KiB
YAML
---
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features:
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- |
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The OpenQASM 2 module :mod:`qiskit.qasm2` has gained the export functions
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:func:`~.qasm2.dump` and :func:`~.qasm2.dumps`. These are used in a very
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similar manner to the previous :meth:`.QuantumCircuit.qasm`::
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from qiskit import qasm2, QuantumCircuit
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qc = QuantumCircuit(2, 2)
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qc.h(0)
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qc.cx(0, 1)
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qc.measure([0, 1], [0, 1])
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print(qasm2.dumps(qc))
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The new functions stem from the same code as :meth:`.QuantumCircuit.qasm`,
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which will slowly be phased out and replaced with the new paths, to provide
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a more coherent interface when compared to the OpenQASM 3
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(:mod:`qiskit.qasm3`) and QPY (:mod:`qiskit.qpy`) modules. This is
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particularly important since the method name :meth:`~.QuantumCircuit.qasm`
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gave no indication of the OpenQASM version, and since it was originally
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added, Qiskit has gained several serialization modules that could easily
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become confused.
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deprecations:
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The little-used :class:`.QuantumCircuit` class data attributes
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:attr:`~.QuantumCircuit.header` and :attr:`~.QuantumCircuit.extension_lib`
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are deprecated and scheduled for removal. These respectively held strings
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of the OpenQASM 2.0 version header statement and ``qelib1.inc`` include
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statement. No alternative will be provided; these were mostly intended
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as internal details.
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