Add '.dir' to the end of every group in the root of an h5 file

AddDirToNames.py

#! /usr/bin/env python

import sys
import h5py

for filename in sys.argv[1:] :
    with h5py.File(filename, 'r+') as f :
        for group in list(f) :
            f[group+'.dir'] = f[group]
            del(f[group])