Combining hdf5 files

Question

I have a number of hdf5 files, each of which have a single dataset. The datasets are too large to hold in RAM. I would like to combine these files into a single file contain

Answer 1

I found a non-python solution by using h5copy from the official hdf5 tools. h5copy can copy individual specified datasets from an hdf5 file into another existing hdf5 file.

If someone finds a python/h5py-based solution I would be glad to hear about it.