What’s new in h5py 3.13

New features

New File.in_memory() constructor to conveniently build an HDF5 file structure in memory (PR 2517).
Dataset views returned by astype(), asstr() and fields() have gained the .dtype, .ndim, .shape, and .size attributes (PR 2550).
The bundled HDF5 library in the pre-built packages was updated to 1.14.6 (PR 2554).
Opening an existing dataset in a file is faster since it now only loads the “dataset creation property list” when required (PR 2552).

H5Sselect_shape_same exposed as h5py.h5s.SpaceID.select_shape_same() (PR 2529).

Fix various bugs when applying np.array or np.asarray to a Dataset view returned by astype(), asstr(), or fields().

Fixed building h5py with Numpy 2.3 (PR 2556).
Bump the specified mpi4py version to fix building with MPI support on Python 3.13 (PR 2524).
Fix for running api_gen.py directly (PR 2534).