prune-source
prune-source is a small Rust/Ruff accelerator for static API analysis. It lexes Python source and
removes function implementation suites that an API visitor does not need, allowing CPython to
construct and walk a much smaller abstract syntax tree. It does not build an intermediate Ruff AST.
pip install prune-source
import ast
from prune_source import prune_source
source = "def answer() -> int:\n return 42\n"
pruned = prune_source(source)
tree = compile(
source if pruned is None else pruned,
"example.py",
"exec",
ast.PyCF_ONLY_AST,
optimize=1,
)
The pruner preserves function signatures, decorators, docstrings, class bodies, and class
__init__ implementations. Other function suites are replaced by pass while physical line
layout is retained. Removed multiline content is collapsed to empty lines rather than padded with
spaces; for indented suites, the pass remains on the original final implementation line so
definition end-line metadata stays stable. Nested function suites inside __init__ are pruned as
well.
The input is expected to be valid for the Python interpreter that will compile it. The lexer does
not perform grammar or version validation. prune_source returns None when there is nothing to
prune; callers should compile their original source in that case.
The pruner uses Ruff's published parser crate to read token ranges and flags without constructing a syntax tree. Ruff's Rust API is unstable, so its component crates are pinned to the same version.
Building from source requires Rust 1.96 or newer.
1 maintainer
Metadata
1 maintainer
Release files for prune-source 0.1.6
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| prune_source-0.1.6.tar.gz | 17.9 kB | Details |
Built distributions (wheels)
| File | Reset | |||
|---|---|---|---|---|
| prune_source-0.1.6-cp311-abi3-win_amd64.whl | CPython 3.11 | abi3 | Windows x86-64 | Details |
| prune_source-0.1.6-cp311-abi3-manylinux_2_17_x86_64.manylinux2014_x86_64.whl | CPython 3.11 | abi3 | Linux glibc 2.17+ x86-64 | Details |
| prune_source-0.1.6-cp311-abi3-manylinux_2_17_aarch64.manylinux2014_aarch64.whl | CPython 3.11 | abi3 | Linux glibc 2.17+ ARM64 | Details |
| prune_source-0.1.6-cp311-abi3-macosx_11_0_arm64.whl | CPython 3.11 | abi3 | macOS 11.0+ ARM64 | Details |
| prune_source-0.1.6-cp311-abi3-macosx_10_12_x86_64.whl | CPython 3.11 | abi3 | macOS 10.12+ x86-64 | Details |
Total release size: 1.3 MB
Release files / prune_source-0.1.6.tar.gz
| Download URL | prune_source-0.1.6.tar.gz |
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| Size | 17.9 kB |
| Tags | Source |
|
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