Missing 5.1

Special Missing objects used in Zope.

Missing

Missing provides special objects used in some Zope internals like the ZCatalog.

Changelog

5.1 (2026-03-18)

• Move package metadata from setup.py to pyproject.toml.

• Add support for Python 3.12, 3.13, 3.14.

• Drop support for Python 3.7, 3.8, 3.9.

5.0 (2023-06-21)

• Drop support for Python 2.7, 3.5, 3.6.

• Deprecate ._Missing which containes just BBB imports.

4.2 (2022-11-16)

• Add support for Python 3.8, 3.9, 3.10, 3.11

4.1 (2018-10-05)

• Drop support for Python 3.4.

• Add support for Python 3.7.

4.0.1 (2017-08-25)

• Restore Missing._Missing module for pickle compatibility with the old C extension version. [https://github.com/zopefoundation/Missing/issues/3]

4.0 (2017-05-16)

• Add support for bytes and matrix multiplication.

• Remove the Python 2-only C extension.

3.2 (2017-04-26)

• Add support for Python 3.6, drop support for Python 3.3.

3.1 (2016-04-03)

• Add support for Python 3.4 and 3.5.

• Drop support for Python 2.6 and 3.2.

3.0 (2013-05-05)

• Added compatibility with Python 3.2, 3.3 and PyPy using the Python implementation.

• Added a Python reference implementation of the Missing class.

• Changed the type name of the Missing class to Missing.Missing to distinguish it from an instance of the type like Missing.Value.

2.13.1 (2010-06-16)

• Added a __class__ to Missing.Value objects.

2.13.0 (2010-03-30)

• Released as separate package.