Pyparsing 3.3.0a1 #620

ptmcg · 2025-09-29T07:03:01Z

ptmcg
Sep 29, 2025
Maintainer

Supports Python 3.14 and free-threaded 3.14t. (Note: this does not mean that pyparsing is thread-safe, simply that pyparsing can safely run using the free-threaded build of Python.)
The version 3.3.0 release will begin emitting DeprecationWarnings for pyparsing methods that have been renamed to PEP8-compliant names (introduced in pyparsing 3.0.0, in August, 2021, with legacy names retained as aliases).
AI instructions have been included for AI guidance when generating parsers using pyparsing. They can be accessed using python -m pyparsing.ai.show_best_practices.
The cvt_pyparsing_pep8_names utility (released in pyparsing 3.2.2) will raise UserWarnings when converting locatedExpr and indentedBlock calls, since the new methods have slightly different call signatures and return types.
Source code examples have all been upgraded to use new PEP8-compliant names.

This discussion was created from the release Pyparsing 3.3.0a1.