Expected behavior

PennyLane should be compatible with all versions of pyzx as per the documentation,

"The `pyzx` package is required. You can install it with `pip install pyzx`." 

Actual behavior

Due to some breaking changes introduced recently in pyzx==0.10.0, any transform from the zx module will error out - unable to be used.

Additional information

These transforms work fine with pyzx<0.10.

Source code

import pennylane as qml import pennylane.transforms.zx as zx dev = qml.device("default.qubit") @zx.reduce_non_clifford @qml.qnode(dev) def circuit(x, y): qml.T(0) qml.Hadamard(0) qml.Hadamard(0) qml.CNOT([0, 1]) qml.T(0) qml.RX(x, 1) qml.RX(y, 1) return qml.state() print(qml.draw(circuit)(3.2, -2.2))

Tracebacks

IndexError: list index out of range

System information

PL v0.44

Existing GitHub issues

• I have searched existing GitHub issues to make sure the issue does not already exist.