new_contents: """
  Simple test of a parallel build of h5py (from h5py's documentation).
  
  http://h5py.readthedocs.org/en/latest/mpi.html#using-parallel-hdf5-from-h5py
  
  If you've built h5py properly against a parallel build of hdf5, you should be
  able to run this code with::
  
      $ mpiexec -n 4 python test_h5py.py
  
  and then check the output with `h5dump`::
  
      $ h5dump parallel_test.hdf5
      HDF5 "parallel_test.hdf5" {
      GROUP "/" {
      DATASET "test" {
          DATATYPE  H5T_STD_I32LE
          DATASPACE  SIMPLE { ( 4 ) / ( 4 ) }
          DATA {
          (0): 0, 1, 2, 3
          }
      }
      }
      }
  """
  
  from mpi4py import MPI
  import h5py
  
  rank = MPI.COMM_WORLD.rank  # The process ID (integer 0-3 for 4-process run)
  
  f = h5py.File('parallel_test.hdf5', 'w', driver='mpio', comm=MPI.COMM_WORLD)
  
  dset = f.create_dataset('test', (4,), dtype='i')
  dset[rank] = rank
  
  f.close()
  
subject: Add a simple test of one's h5py installation.