Fixed mistake in random.py

4 jobs for master in 35 seconds
Status Job ID Name Coverage
  Test
canceled #257386
test_minimal

00:00:35

canceled #257387
test_mpi

00:00:35

canceled #257388
test_mpi_fftw

00:00:35

canceled #257389
test_mpi_fftw_hdf5

00:00:35