qml.operation.disable_new_opmath

disable_new_opmath(warn=True)

Change dunder methods to return Hamiltonians and Tensors instead of arithmetic operators

Warning

Using legacy operator arithmetic is deprecated, and will be removed in PennyLane v0.40. For further details, see Updated Operators.

Parameters

warn (bool) – Whether or not to emit a warning for disabling new opmath. Default is True.

Example

>>> qml.operation.active_new_opmath()
True
>>> type(qml.X(0) @ qml.Z(1))
<class 'pennylane.ops.op_math.prod.Prod'>
>>> qml.operation.disable_new_opmath()
>>> type(qml.X(0) @ qml.Z(1))
<class 'pennylane.operation.Tensor'>

code/api/pennylane.operation.disable_new_opmath

 

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