python314-subset.gram is the reviewed executable subset used by the managed parser. Its upstream reference is CPython v3.14.6, commit c63aec69bd59c55314c06c23f4c22c03de76fe45, file Grammar/python.gram. The upstream file's SHA-256 digest is 34f0f9b2e8a22760ca4e6e7e56857cb22f4c73e0853e5452b7e93e48ddb17361.

The subset retains grammar structure needed for the declared DotPython compatibility profile. It does not copy CPython's C construction actions; DotPython constructs its own managed AST. CPython is distributed under the Python Software Foundation License.

Regenerate and verify the checked-in executable grammar with:

just parser-generate
just parser-check

Generation is offline and deterministic. Changing the grammar or its provenance comments changes the embedded SHA-256 fingerprint and must produce a reviewed generated-file diff.