my_nxshow.py

gistfile1.txt

"""A nexus file summary tool implemented with h5py"""

import h5py
import sys


def print_dset(dset):
    print '\t', dset
    for k, v in sorted(dset.attrs.iteritems()):
        print "\t\t@%s=%s" % (k,v)

def print_grp(grp):
    print "\n%s (%s)" % (grp.name, grp.attrs.get('NX_class', ''))
    for k, v in sorted(grp.attrs.iteritems()):
        print "\t@%s=%s" % (k, v)
    datasets = []
    groups = []
    for k, v in grp.iteritems():
        if isinstance(v, h5py.Group):
            groups.append((k, v))
        elif isinstance(v, h5py.Dataset):
            datasets.append((k, v))
    for k, v in sorted(datasets):
        print_dset(v)
    for k, v in sorted(groups):
        print_grp(v)

fname = '/tmp/kk1.hdf5'
if len(sys.argv) >= 2:
    fname = sys.argv[1]

f = h5py.File(fname, mode='r')

print_grp(f['/'])

f.close()