parsanol (Python)

Python runtime for PARG artifacts — checksummed parsanol-tree/v2 envelopes that Ruby, Rust, WebAssembly, TypeScript, and now Python all parse identically.

The engine is the real one: this package drives libparsanol (the pure-portable C ABI cdylib, the same binary the Ruby ffi tier ships) via ctypes. No second parser, no reimplementation.

pip install parsanol

Each platform wheel vendors the cdylib: Linux (manylinux_2_35, x86_64), macOS (arm64), Windows (x64). There is no sdist — the Rust sources are a submodule of the repository, not of the archive, so a source install could never load the engine. Point a locally built library at the runtime with PARSANOL_CDYLIB=/path/to/libparsanol.

from parsanol import PargArtifact

artifact = PargArtifact.from_path("demo.artifact.json")  # verifies sha256
tree = artifact.parse("iso 12345", "identifier")         # shaped tree
run = artifact.run_tests()                               # embedded tests replayed

On rejection, parse raises ParseFailed carrying the engine's failure wire (offset, ranked positions, expected set).

Status and honest boundaries (v0.1)

Development

cargo build -p parsanol-ffi --release          # in parsanol-rs
export PARSANOL_CDYLIB=$RS/target/release/libparsanol.dylib
ln -s ../parsanol-rs/corpus corpus             # for the corpus gate
python3 -m pip install -e . pytest
python3 -m pytest tests -q

The corpus gate (tests/test_corpus.py) pins the size: 155 cases, zero skips — when it moves, this repo moves with it deliberately.