Merge pull request #2883 from devitocodes/op-arg-fix #303

Job	Run time
pytest-mpi (pytest-mpi-docker-icx)	36m 39s
pytest-mpi (3.10)	45m 2s
pytest-mpi (pytest-mpi-docker-gcc-arm)	24m 29s
pytest-mpi (pytest-mpi-docker-gcc)	32m 15s
pytest-mpi (3.11)	45m 20s
	3h 3m 45s

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