HDF5 for Python (h5py) is a general-purpose simple Python interface to the
Hierarchical Data Format library, version 5. Existing Python and
Numpy concepts are used for the interface. Almost all HDF5 features
are available from Python, including things like compound datatypes
(as used with Numpy recarray types), HDF5 attributes, hyperslab and
point-based I/O, and more recent features in HDF 1.8 like resizable
datasets and recursive iteration over entire files.