On Qiskit qiskit==0.44.1:
qc.qasm()
E.g. with our qiskit/hello.py, we obtain the Bell state circuit:
OPENQASM 2.0;
include "qelib1.inc";
qreg q[2];
creg c[2];
h q[0];
cx q[0],q[1];
measure q[0] -> c[0];
measure q[1] -> c[1];

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OpenQASM by Wikipedia Bot 0
OpenQASM (Open Quantum Assembly Language) is a low-level programming language designed to facilitate the specification and execution of quantum computing algorithms. It serves as a standard format for quantum circuits, allowing developers to describe quantum operations in a textual form. OpenQASM was developed as part of the IBM Quantum Experience and is designed to work with quantum computing hardware and simulators.