import h5py
import km3pipe as kp

f = h5py.File('concatenated.h5', 'r')
p = kp.io.hdf5.HDF5Pump(filename='concatenated.h5', shuffle=False)

#-- Print info of h5 with h5py --#
print(f['group_info'][()])
# array([(2, 0), (2, 1), (2, 2), (2, 3), (2, 4), (2, 5), (2, 6), (2, 7),
#       (2, 8), (2, 9)],
#      dtype=[('blob_length', '<i8'), ('group_id', '<i8')])

print(f['group_info'][0])
# -----> (2, 0)

print(f['y'][0]['event_id'])
# -----> 3.0

#-- Print info of h5 with HDF5Pump --#
print(p[0]['GroupInfo'])
# GroupInfo <class 'km3pipe.dataclasses.Table'>
# HDF5 location: /group_info (no split)
# <i8 (dtype: blob_length) = [2]
# <i8 (dtype: group_id) = [0] <----

print(p[0]['Y']['event_id'])
# -----> [2.]