from mpi4py import rc

rc.initialize = False

from mpi4py import MPI  # noqa: E402

assert not MPI.Is_initialized()
assert not MPI.Is_finalized()

level = MPI.Init_thread(MPI.THREAD_MULTIPLE)
assert MPI.Query_thread() == level
assert MPI.Is_initialized()
assert not MPI.Is_finalized()

MPI.Finalize()
assert MPI.Is_initialized()
assert MPI.Is_finalized()