Release notes for PyTables 3.6 series


PyTables Developers


Changes from 3.6.0 to 3.6.1

Maintenance release to fix packaging issues. No new features or bugfixes.

Changes from 3.5.3 to 3.6.0

PyTables 3.6 no longer supports Python 2.7 see PR #747.


  • Full python 3.8 support.

  • On Windows PyTables wheels on PyPI are linked to pytables_hdf5.dll instead of hdf5.dll to prevent collisions with other packages/wheels that also vendor hdf5.dll. This should prevent problems that arise when a different version of a dll is imported that the version to which the program was linked to. This problem is known as “DLL Hell”. With the renaming of the HDF5 DLL to pytables_hdf5.dll these problems should be solved.


  • Bugfix for HDF5 files/types with padding. For details see gh-734.

  • More fixes for python 3.8 compatibility: Replace deprecated time.clock with time.perf_counter Thanks to Sergio Pascual (sergiopasra). see gh-744 and PR #745.

  • Improvements in tests as well as clean up from dropping Python 2.7 support. Thanks to Seth Troisi (sethtroisi).