Verify that the frames of an HDF5 file are all identical, and return the hash

verify.py

import h5py
import hdf5plugin
import sys


def verify(filename):
    with h5py.File(filename, "r") as f:
        data = f["data"]
        nn = data.shape[0]
        h = None
        for j in range(nn):
            a = data[j, :, :]
            a.flags.writeable = False
            if h is None:
                h = hash(a.data.tobytes())
            else:
                assert h == hash(a.data.tobytes())

        print(filename, h)


for filename in sys.argv[1:]:
    verify(filename)