Search code examples
pythonqiskit

How to convert QuantumCircuit to OpenQasm 2.0 in qiskit 1.0+

I need to convert a QuantumCircuit to a string of the equivalent OpenQasm 2.0 circuit in qiskit.

It seems like the method .qasm() disappeared from the QuantumCircuit class in qiskit 1.0 And I wasn't able to find an alternative.

I need the qiskit 1.0 version of this:

c  = qiskit.QuantumCircuit(1)
c.h(0)

c.qasm()
Solution

  • This changed in Qiskit 1.0. You can still export to QASM code, but there is no more QuantumCircuit.qasm() method.

    https://docs.quantum.ibm.com/api/migration-guides/qiskit-1.0-features#quantumcircuitqasm

    The new method is

    from qiskit import QuantumCircuit
qc = QuantumCircuit(1)
 
from qiskit.qasm2 import dumps
qasm_str = dumps(qc)