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pycparser

Frameworks & Libraries

pycparser release notes.

Latest release_v3.00 · Jan 21, 2026by pycparserWritten in PythonWebsite eliben/pycparser RSS

Changelog

release_v3.00

LatestJan 21, 2026 · 8 months ago

Added 1

Add support for Python 3.14

Changed 1

Update _ast_gen.py to be in sync with c_ast.py

Removed 2

Removed dependency on PLY by rewriting pycparser to use a hand-written lexer and recursive-descent parser for C
Drop support for end-of-life Python 3.8

From pycparser

What's Changed

Removed dependency on PLY, by rewriting pycparser to use a hand-written lexer and recursive-descent parser for C. No API changes / functionality changes intended - the same AST is produced.
Add support for Python 3.14 and drop EOL 3.8 by @hugovk in https://github.com/eliben/pycparser/pull/581
Update _ast_gen.py to be in sync with c_ast.py by @simonlindholm in https://github.com/eliben/pycparser/pull/582

Full Changelog: https://github.com/eliben/pycparser/compare/release_v2.23...release_v3.00

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release_v2.23

Sep 9, 2025 · about 1 year ago

Added 9

Allow abstract declarator "static"
Add support for Python 3.13
Add dirent and socket typedefs
Support for labels with no statement
Accept empty 'case' or 'default' labels
Explicit error for comments with README link
Add showemptyattrs option on Node.show()
Add fake typedefs for GNU Extension 128-bit integers
Add typedef for __kernel_sa_family_t in linux/socket.h

Fixed 2

Preserve parentheses for statement exprs
Fix hex float types

From pycparser

What's Changed

Allow abstract declarator "static" (GH issue #539) by @gperciva in https://github.com/eliben/pycparser/pull/545
Add support for Python 3.13 by @hugovk in https://github.com/eliben/pycparser/pull/550
Add dirent and socket typedefs. by @MegaManSec in https://github.com/eliben/pycparser/pull/558
Support for labels with no statement by @ignatirabo in https://github.com/eliben/pycparser/pull/562
Accept empty 'case' or 'default' labels by @ignatirabo in https://github.com/eliben/pycparser/pull/564
fix: preserve parentheses for statement exprs by @zawan-ila in https://github.com/eliben/pycparser/pull/566
fix: hex float types by @zawan-ila in https://github.com/eliben/pycparser/pull/567
Explicit error for comments, with README link by @cellularmitosis in https://github.com/eliben/pycparser/pull/569
showemptyattrs option on Node.show() by @cellularmitosis in https://github.com/eliben/pycparser/pull/570
Add fake typedefs for GNU Extension 128-bit integers. by @dj-wednesday in https://github.com/eliben/pycparser/pull/577
Typedef for __kernel_sa_family_t in linux/socket.h by @crosser in https://github.com/eliben/pycparser/pull/578

New Contributors

@gperciva made their first contribution in https://github.com/eliben/pycparser/pull/545
@MegaManSec made their first contribution in https://github.com/eliben/pycparser/pull/558
@ignatirabo made their first contribution in https://github.com/eliben/pycparser/pull/562
@zawan-ila made their first contribution in https://github.com/eliben/pycparser/pull/566
@cellularmitosis made their first contribution in https://github.com/eliben/pycparser/pull/569
@dj-wednesday made their first contribution in https://github.com/eliben/pycparser/pull/577
@crosser made their first contribution in https://github.com/eliben/pycparser/pull/578

Full Changelog: https://github.com/eliben/pycparser/compare/release_v2.22...release_v2.23

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release_v2.22

Mar 30, 2024 · over 2 years ago

Added 5

Add missing SCHAR limit defines
Add Python 3.11 as a supported version
Add an encoding parameter to parse_file
Add pragma support
Add support for Python 3.12

Changed 3

Use proper SPDX identifier
Invalidate cache before importing generated modules in _build_tables
Make generated lextab.py deterministic

Fixed 1

Fix multi-pragma/single statement blocks

From pycparser

What's Changed

Add missing SCHAR limit defines by @matamegger in https://github.com/eliben/pycparser/pull/449
Use proper SPDX identifier by @Shortfinga in https://github.com/eliben/pycparser/pull/474
Add Python 3.11 as a supported version by @erlend-aasland in https://github.com/eliben/pycparser/pull/469
Fix multi-pragma/single statement blocks (#479) by @ldore in https://github.com/eliben/pycparser/pull/480
Add an encoding parameter to parse_file by @jordr in https://github.com/eliben/pycparser/pull/486
Feature/add pragma support by @jordr in https://github.com/eliben/pycparser/pull/487
Set up permissions to ci.yml by @joycebrum in https://github.com/eliben/pycparser/pull/492
_build_tables: Invalidate cache before importing generated modules by @mgorny in https://github.com/eliben/pycparser/pull/494
Upgrade GitHub Actions by @cclauss in https://github.com/eliben/pycparser/pull/500
Create a Security Policy by @joycebrum in https://github.com/eliben/pycparser/pull/499
New example to generate AST from scratch by @Andree37 in https://github.com/eliben/pycparser/pull/507
Add support for Python 3.12 by @hugovk in https://github.com/eliben/pycparser/pull/515
ply: Make generated lextab.py deterministic by @jackrosenthal in https://github.com/eliben/pycparser/pull/531

New Contributors

@matamegger made their first contribution in https://github.com/eliben/pycparser/pull/449
@Shortfinga made their first contribution in https://github.com/eliben/pycparser/pull/474
@erlend-aasland made their first contribution in https://github.com/eliben/pycparser/pull/469
@jordr made their first contribution in https://github.com/eliben/pycparser/pull/486
@joycebrum made their first contribution in https://github.com/eliben/pycparser/pull/492
@mgorny made their first contribution in https://github.com/eliben/pycparser/pull/494
@cclauss made their first contribution in https://github.com/eliben/pycparser/pull/500
@Andree37 made their first contribution in https://github.com/eliben/pycparser/pull/507
@jackrosenthal made their first contribution in https://github.com/eliben/pycparser/pull/531

Full Changelog: https://github.com/eliben/pycparser/compare/release_v2.21...release_v2.22

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