qiskit.aqua.operators.converters.AbelianGrouper.group_subops

classmethod AbelianGrouper.group_subops(list_op, fast=None, use_nx=None)

Given a ListOp, attempt to group into Abelian ListOps of the same type.

Parameters

• list_op (ListOp) – The Operator to group into Abelian groups

• fast (Optional[bool]) – Ignored - parameter will be removed in future release

• use_nx (Optional[bool]) – Ignored - parameter will be removed in future release

Return type

ListOp

Returns

The grouped Operator.

Raises

AquaError – If any of list_op’s sub-ops is not PauliOp.