Update deprecated usage of tape and qtape properties in QNode
#602
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mudit2812
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Nov 14, 2024
andrijapau
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Nov 18, 2024
**Context:** The QNode currently has `QNode.tape` and `QNode.qtape` properties, which track the last tape generated during a construct call. Users can check these to verify what was executed most recently. Now, we’ve added `construct_tape(qnode)(*args, **kwargs)` in the workflow module as a preferred method for constructing tapes. This function creates a tape without modifying the QNode, ensuring it doesn’t interfere with other parts of the codebase. **Description of the change** - _Hopefully_ removed all calls to `QNode.tape` and `QNode.qtape` in the PennyLane source code. - Since many tests rely on these properties to access tape information, I’ve temporarily suppressed the warnings. This needs to be revisited in the backlog and gradually updated to use the preferred code [sc-78317]. Found references in, - QML: PennyLaneAI/qml#1266 - Qiskit: PennyLaneAI/pennylane-qiskit#602 No references in, - Lightning - Catalyst - AQT - IONQ - Qulacs - Cirq **Benefits:** Removes problems and confusion with having a mutable tape property. **Possible Drawbacks:** None [sc-76836] --------- Co-authored-by: Christina Lee <[email protected]> Co-authored-by: Mudit Pandey <[email protected]>
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Summary:
Updating deprecated code that was introduced from a recent deprecation PennyLaneAI/pennylane#6583.
[sc-76836]