H5py 2.0 released!

After many months of work, h5py 2.0.0 is now available for download. Thanks to everyone who contributed, be it with bug reports, suggestions, or patches.

H5py 1.4 beta

H5py 1.4 beta2 is available! This release has been a long, long time in the making and is a substantial update to h5py. Send feedback and bug reports to h5py at googlegroups, or to the bug tracker.

Switch to Mercurial, and next release

I've switched to Mercurial to make it easier to develop offline, and to make it easier for people to hack h5py if they want.

The next version of h5py will be 1.3.2 (bugfix), and will be released Febuary 15th.

H5py 1.3.0 final released

H5py 1.3.0 was released on March 15.

H5Py 1.3.0 beta released

The beta will be available for approximately two weeks.

Windows installers released

Packages for Windows (Python 2.5 and Python 2.6) are now posted.

UNIX release 1.2.1

Bugfix release 1.2.1 tarball is out! Windows versions to follow this week.

LZF filter revision 3

Released an updated version of the stand-alone LZF filter, which resolved the HDF5 1.8.3 incompatibility. The fix is already applied to the version of LZF shipped with h5py 1.2.

Windows version for Python 2.6

There's now a version of h5py compiled for Windows Python 2.6. Thanks to Armando Solé for the contribution!

Release 1.2

HDF5 for Python 1.2 is now available for UNIX and Windows!

Beta now available

Following a number of last-minute changes and fixes, h5py 1.2 beta is now available. Hopefully future releases will come more frequently than 5 months!

Update: upcoming release 1.2

HDF5 for Python version 1.2 will be released (beta) on or around June 1, 2009! This is a significant update, with a two-week beta period to allow for feedback. A final release will be made June 14. The following new features will be released in 1.2:

• Support (read/write/create) for variable-length strings.
• Support (read/write/create) for enumerated types, and auto-conversion between enums and integer types.
• NumPy "array" dtypes now allowed as top-level dataset types
• Exceptions now inherit from useful Python classes like KeyError, ValueError, etc, in addition to H5Error

The following features are targeted for h5py 1.3 to allow enough time for development and testing:

• Arbitrary variable-length datatypes (requires implementation of a new type-registry system)
• High-level object and region references

LZF benchmarks

The LZF filter now has its own page at alfven.org including benchmarks. Revision 2 is now available, with minor speed improvements.

1.1 released

An independent distribution of the LZF filter (written in C) is also available.

Upcoming Release 1.1

Version 1.1 will be released for all platforms (Linux, Windows and Mac OS-X) "soon". Some last-minute bugs are being fixed.

• A built-in LZF filter for extremely fast compression/decompression (comparable to PyTables' LZO interface)
• High-level access to HDF5 dataspace selections
• Support for NumPy to HDF5 broadcasting
• Selections interface to support the set-like features of HDF5 dataspaces
• Setuptools compatibility; will be installable via easy_install
• Unified distribution for HDF 1.6 and 1.8, not requiring Cython recompilation
• Support for NumPy boolean arrays
• Improved unit tests

Windows version 1.0.1

Minor changes to the DLL naming scheme were made to prevent a conflict with PyTables, which installs an older version of HDF5 (1.6.7).

Version 1.0.0 released

Both UNIX and Windows versions are now available.

Upcoming Release 1.0

H5py version 1.0.0 will be released for Linux and OS-X on December 1, 2008, with a Windows installer in the next week or so. Thanks to everyone who helped make this a success!

At this point the general design of h5py is finished. Updates in the 1.X series will focus on increasing reliability and coverage of unit tests, and adding to the low-level API to encompass more features in HDF5 1.8.