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The __isnull lookup of JSONField must special case Value(None, JSONField()) left-hand-side in order to be coherent with its convoluted null handling. Since psycopg>=3 offers no way to pass a NULL::jsonb the issue is resolved by optimizing IsNull(Value(None), True | False) to True | False. Regression in 5c23d9f0c32f166c81ecb6f3f01d5077a6084318. Thanks Alexandre Collet for the report.
The documentation in this tree is in plain text files and can be viewed using any text file viewer. It uses `ReST`_ (reStructuredText), and the `Sphinx`_ documentation system. This allows it to be built into other forms for easier viewing and browsing. To create an HTML version of the docs: * Install Sphinx (using ``python -m pip install Sphinx`` or some other method). * In this docs/ directory, type ``make html`` (or ``make.bat html`` on Windows) at a shell prompt. The documentation in ``_build/html/index.html`` can then be viewed in a web browser. .. _ReST: https://docutils.sourceforge.io/rst.html .. _Sphinx: https://www.sphinx-doc.org/