zope.deferredimport (original) (raw)

Often, especially for package modules, you want to import names for convenience, but not actually perform the imports until necessary. The zope.deferredimport package provided facilities for defining names in modules that will be imported from somewhere else when used. You can also cause deprecation warnings to be issued when a variable is used.

Documentation is hosted at https://zopedeferredimport.readthedocs.io/

Changes

6.0 (2025-09-12)

• Replace pkg_resources namespace with PEP 420 native namespace.

5.1 (2025-08-11)

• Add support for Python 3.12, 3.13.
• Drop support for Python 3.7, 3.8.

5.0 (2023-06-29)

• Drop support for Python 2.7, 3.5, 3.6.
• Add support for Python 3.11.

4.4 (2021-12-10)

• Add support for Python 3.8, 3.9 and 3.10.
• Drop support for Python 3.4.

4.3.1 (2019-08-05)

• Avoid race condition in deferredmodule.ModuleProxy.__getattr__ #8.

4.3 (2018-10-05)

• Add support for Python 3.7.

4.2.1 (2017-10-24)

• Preserve the docstrings of proxied modules created withdeprecatedFrom, deferredFrom, etc. See issue 5.

4.2.0 (2017-08-08)

• Add support for Python 3.5 and 3.6.
• Drop support for Python 2.6 and 3.3.
• Convert doctests to Sphinx documentation, including building docs and running doctest snippets under tox.

4.1.0 (2014-12-26)

• Add support for PyPy. PyPy3 support is blocked on release of fix for:https://bitbucket.org/pypy/pypy/issue/1946
• Add support for Python 3.4.
• Add support for testing on Travis.

4.0.0 (2013-02-28)

• Add support for Python 3.3.
• Drop support for Python 2.4 and 2.5.

3.5.3 (2010-09-25)

• Add test extra to declare test dependency on zope.testing.

3.5.2 (2010-05-24)

• Fix unit tests broken under Python 2.4 by the switch to the standard library doctest module.

3.5.1 (2010-04-30)

• Prefer the standard library’s doctest module to the one fromzope.testing.

3.5.0 (2009-02-04)

• Add support to bootstrap on Jython.
• Add reference documentation.

3.4.0 (2007-07-19)

• Finish release of zope.deferredimport.

3.4.0b1 (2007-07-09)

• Initial release as a separate project, corresponding to thezope.deferredimport from Zope 3.4.0b1.