PyO3/pyo3

Pattern Findings

The scanner identified 742 distinct pattern matches across 17 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a detector match to inspect in context. Expand any category row to inspect the individual file paths, line numbers, code snippets, and the lexical context (CODE, COMMENT, or STRING) in which each match was detected.

Reading the findings table: The Severity column indicates the configured finding weight (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — legacy comment-context matches receive a ×1.5 score weight. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier under the legacy scoring model.

Over-Commented Block638 hits · 603 pts

Severity	File	Line	Snippet	Context
LOW	typos.toml	1	[files]	COMMENT
LOW	typos.toml	21	# \| ^^^	COMMENT
LOW	typos.toml	41	# error: `placehold` should be `placeholder`	COMMENT
LOW	typos.toml	61	# \|	COMMENT
LOW	guide/src/class.md	241	) -> PyResult<()> {	COMMENT
LOW	guide/src/class.md	261	# });	COMMENT
LOW	guide/src/class.md	501	if val % 2 == 0 {	COMMENT
LOW	guide/src/class.md	841	- For details on `parameter-list`, see the documentation of `Method arguments` section.	COMMENT
LOW	guide/src/class.md	1081	#[classmethod]	COMMENT
LOW	guide/src/class.md	1101	# let doc: String = class.getattr("__doc__")?.extract()?;	COMMENT
LOW	guide/src/class.md	1121	# let sig: String = inspect	COMMENT
LOW	guide/src/class.md	1141	# let method = class.getattr("my_static_method")?;	COMMENT
LOW	guide/src/parallelism.md	41	```	COMMENT
LOW	guide/src/parallelism.md	61	```	COMMENT
LOW	guide/src/function.md	141	# let warnings = py.import("warnings")?;	COMMENT
LOW	guide/src/function.md	161	# for (warning, (category, message)) in list.iter().zip(expected_warnings) {	COMMENT
LOW	guide/src/migration.md	501	# use pyo3::sync::GILOnceCell;	COMMENT
LOW	guide/src/migration.md	1861	```rust	COMMENT
LOW	guide/src/advanced.md	21	For example, [`append_to_inittab!`]({{#PYO3_DOCS_URL}}/pyo3/macro.append_to_inittab.html) must be called before Python i	COMMENT
LOW	guide/src/trait-bounds.md	181	# }	COMMENT
LOW	guide/src/trait-bounds.md	201	# self.model	COMMENT
LOW	guide/src/trait-bounds.md	341	Let's modify the code performing the type conversion to give a helpful error message to the Python user:	COMMENT
LOW	guide/src/trait-bounds.md	381	#	COMMENT
LOW	guide/src/conversions/traits.md	1	# Conversion traits	COMMENT
LOW	guide/src/conversions/traits.md	41		COMMENT
LOW	guide/src/conversions/traits.md	81	# let dict = PyDict::new(py);	COMMENT
LOW	guide/src/conversions/traits.md	101	string_attr: String,	COMMENT
LOW	guide/src/conversions/traits.md	141	bar: String,	COMMENT
LOW	guide/src/conversions/traits.md	161	Tuple structs are also supported but do not allow customizing the extraction.	COMMENT
LOW	guide/src/conversions/traits.md	221	inner: String,	COMMENT
LOW	guide/src/conversions/traits.md	281	# let rust_thing: RustyEnum<'_> = thing.extract()?;	COMMENT
LOW	guide/src/conversions/traits.md	301	# );	COMMENT
LOW	guide/src/conversions/traits.md	321	# match rust_thing {	COMMENT
LOW	guide/src/conversions/traits.md	341	# let rust_thing: RustyEnum<'_> = instance.extract()?;	COMMENT
LOW	guide/src/conversions/traits.md	361	# )?;	COMMENT
LOW	guide/src/conversions/traits.md	381	# b"text",	COMMENT
LOW	guide/src/conversions/traits.md	401	enum RustyEnum {	COMMENT
LOW	guide/src/conversions/traits.md	421	# }	COMMENT
LOW	guide/src/conversions/traits.md	501	# // Filled case	COMMENT
LOW	guide/src/function/signature.md	141	The example below creates a function `add` which accepts two positional-only arguments `a` and `b`, where `b` has a defa	COMMENT
LOW	guide/src/function/signature.md	201	# Python::attach(\|py\| {	COMMENT
LOW	guide/src/function/signature.md	241	a + b	COMMENT
LOW	guide/src/function/error-handling.md	161	}	COMMENT
LOW	guide/src/class/numeric.md	341	# n = Number(0)	COMMENT
LOW	guide/src/class/numeric.md	361	#	COMMENT
LOW	guide/src/class/numeric.md	381	# import inspect	COMMENT
LOW	guide/src/class/object.md	41		COMMENT
LOW	guide/src/class/object.md	281	self.0 == other.0	COMMENT
LOW	pyo3-ffi/src/moduleobject.rs	41	pub fn PyModule_GetDict(arg1: mut PyObject) -> mut PyObject;	COMMENT
LOW	pyo3-ffi/src/methodobject.rs	141	/// Function types used to implement Python callables.	COMMENT
LOW	pyo3-ffi/src/lib.rs	1	#![no_std]	COMMENT
LOW	pyo3-ffi/src/lib.rs	21	//! - The vast majority can only be used safely while the thread is attached to the Python interpreter.	COMMENT
LOW	pyo3-ffi/src/lib.rs	41	//! PyO3 uses `rustc`'s `--cfg` flags to enable or disable code used for different Python versions.	COMMENT
LOW	pyo3-ffi/src/lib.rs	61	//! To use these attributes, add [`pyo3-build-config`] as a build dependency in	COMMENT
LOW	pyo3-ffi/src/lib.rs	81	//! - CPython 3.9 or greater	COMMENT
LOW	pyo3-ffi/src/lib.rs	101	//! # Downstream Rust code (including code in `bin/`, `examples/`, and `tests/`) will not be able	COMMENT
LOW	pyo3-ffi/src/lib.rs	121	//! `build.rs`	COMMENT
LOW	pyo3-ffi/src/lib.rs	141	//! m_base: PyModuleDef_HEAD_INIT,	COMMENT
LOW	pyo3-ffi/src/lib.rs	161	//! // A zeroed PyMethodDef to mark the end of the array.	COMMENT
LOW	pyo3-ffi/src/lib.rs	181	//! slot: 0,	COMMENT
578 more matches not shown…

Hyper-Verbose Identifiers56 hits · 56 pts

Severity	File	Line	Snippet	Context
LOW	noxfile.py	60	def _parse_supported_interpreter_version(	CODE
LOW	noxfile.py	74	def _supported_interpreter_versions(	CODE
LOW⚡	noxfile.py	325	def _clippy_additional_workspaces(session: nox.Session) -> bool:	CODE
LOW	noxfile.py	644	def test_cross_compilation_windows(session: nox.Session):	CODE
LOW	noxfile.py	1312	def set_msrv_package_versions(session: nox.Session):	STRING
LOW	noxfile.py	1585	def _iter_extern_libpython_blocks(source: str) -> Iterator[str]:	CODE
LOW	noxfile.py	1610	def _cfg_attr_is_non_cpython_only(attr: str) -> bool:	CODE
LOW⚡	examples/word-count/tests/test_word_count.py	35	def test_word_count_rust_parallel(benchmark, contents):	STRING
LOW⚡	examples/word-count/tests/test_word_count.py	40	def test_word_count_rust_sequential(benchmark, contents):	STRING
LOW⚡	examples/word-count/tests/test_word_count.py	45	def test_word_count_python_sequential(benchmark, contents):	STRING
LOW⚡	examples/word-count/tests/test_word_count.py	50	def run_rust_sequential_twice(	STRING
LOW⚡	examples/word-count/tests/test_word_count.py	60	def test_word_count_rust_sequential_twice_with_threads(benchmark, contents):	STRING
LOW	pytests/tests/test_sequence.py	9	def test_vec_from_list_pystring():	CODE
LOW	pytests/tests/test_sequence.py	29	def test_rust_array_from_array():	CODE
LOW	pytests/tests/test_misc.py	23	def test_multiple_imports_same_interpreter_ok():	CODE
LOW	pytests/tests/test_misc.py	41	def test_import_in_subinterpreter_forbidden():	CODE
LOW	pytests/tests/test_misc.py	67	def test_type_fully_qualified_name_includes_module():	CODE
LOW	pytests/tests/test_datetime_hypothesis.py	110	def test_datetime_from_timestamp(dt):	CODE
LOW	pytests/tests/test_finalization.py	27	def test_hammer_attaching_in_thread():	CODE
LOW	pytests/tests/test_finalization.py	35	def test_detach_during_finalization():	CODE
LOW	pytests/tests/test_enums.py	5	def test_complex_enum_variant_constructors():	CODE
LOW	pytests/tests/test_enums.py	39	def test_complex_enum_variant_subclasses(variant: enums.ComplexEnum):	CODE
LOW	pytests/tests/test_enums.py	43	def test_complex_enum_field_getters():	CODE
LOW	pytests/tests/test_enums.py	74	def test_complex_enum_desugared_match(variant: enums.ComplexEnum):	CODE
LOW	pytests/tests/test_enums.py	105	def test_complex_enum_pyfunction_in_out_desugared_match(variant: enums.ComplexEnum):	CODE
LOW	pytests/tests/test_enums.py	126	def test_tuple_enum_variant_constructors():	CODE
LOW	pytests/tests/test_enums.py	142	def test_tuple_enum_variant_subclasses(variant: enums.TupleEnum):	CODE
LOW⚡	pytests/tests/test_enums.py	153	def test_tuple_enum_field_getters():	CODE
LOW⚡	pytests/tests/test_enums.py	160	def test_tuple_enum_index_getter():	CODE
LOW⚡	pytests/tests/test_enums.py	170	def test_mixed_complex_enum_pyfunction_instance_nothing(	CODE
LOW	pytests/tests/test_enums.py	183	def test_mixed_complex_enum_pyfunction_instance_empty(variant: enums.MixedComplexEnum):	CODE
LOW	pytests/tests/test_datetime.py	76	def test_invalid_time_fails_overflow(args):	CODE
LOW	pytests/tests/test_datetime.py	126	def test_invalid_datetime_fails():	CODE
LOW	pytests/tests/test_datetime.py	136	def test_datetime_from_timestamp_tzinfo():	CODE
LOW	pytests/tests/test_datetime.py	194	def test_tz_class_introspection():	CODE
LOW	pytests/tests/test_enums_match.py	16	def test_complex_enum_match_statement(variant: enums.ComplexEnum):	CODE
LOW	pytests/tests/test_enums_match.py	44	def test_complex_enum_pyfunction_in_out(variant: enums.ComplexEnum):	CODE
LOW	pytests/tests/test_enums_match.py	68	def test_complex_enum_partial_match(variant: enums.ComplexEnum):	CODE
LOW	pytests/tests/test_enums_match.py	83	def test_tuple_enum_match_statement(variant: enums.TupleEnum):	CODE
LOW	pytests/tests/test_enums_match.py	103	def test_simple_tuple_enum_match_statement(variant: enums.SimpleTupleEnum):	CODE
LOW	pytests/tests/test_enums_match.py	119	def test_tuple_enum_match_match_args(variant: enums.TupleEnum):	CODE
LOW	pytests/tests/test_enums_match.py	136	def test_tuple_enum_partial_match(variant: enums.TupleEnum):	CODE
LOW	pytests/tests/test_enums_match.py	151	def test_mixed_complex_enum_match_statement(variant: enums.MixedComplexEnum):	CODE
LOW	pytests/tests/test_pyclasses.py	85	def test_option_iter_type_hints() -> None:	CODE
LOW	pytests/tests/test_pyclasses.py	170	def test_no_constructor_defined_propagates_cause(cls: type, exc_message: str):	CODE
LOW	pytests/tests/test_pyfunctions.py	66	def test_simple_args_kwargs_py(benchmark):	CODE
LOW	pytests/tests/test_pyfunctions.py	70	def test_simple_args_kwargs_rs(benchmark):	CODE
LOW	pytests/tests/test_pyfunctions.py	104	def test_positional_only_batched_py(benchmark):	CODE
LOW	pytests/tests/test_pyfunctions.py	118	def test_positional_only_batched_rs(benchmark):	CODE
LOW	pytests/tests/test_pyfunctions.py	146	def many_keyword_arguments_py(	CODE
LOW	pytests/tests/test_pyfunctions.py	167	def call_with_many_keyword_arguments(f) -> Any:	CODE
LOW	pytests/tests/test_pyfunctions.py	186	def test_many_keyword_arguments_py(benchmark):	CODE
LOW	pytests/tests/test_pyfunctions.py	190	def test_many_keyword_arguments_rs(benchmark):	CODE
LOW	pytests/tests/test_exception.py	4	def test_pypy_exception_dealloc():	CODE
LOW	pytests/tests/test_objstore.py	7	def test_objstore_doesnot_leak_memory():	CODE
LOW	pytests/tests/test_path.py	29	def test_take_invalid_pathlike():	CODE

Cross-Language Confusion5 hits · 32 pts

Severity	File	Line	Snippet	Context
HIGH⚡	examples/plugin/python_plugin/gadget_init_plugin.py	8	g.push(1)	CODE
HIGH⚡	examples/plugin/python_plugin/gadget_init_plugin.py	9	g.push(2)	CODE
HIGH⚡	examples/plugin/python_plugin/gadget_init_plugin.py	10	g.push(3)	CODE
HIGH	examples/plugin/plugin_api/tests/test_Gadget.py	22	gadget.push(42)	CODE
HIGH	pytests/tests/test_objstore.py	23	store.push(message)	CODE

Excessive Try-Catch Wrapping10 hits · 14 pts

Severity	File	Line	Snippet	Context
LOW⚡	noxfile.py	332	except Exception:	CODE
LOW⚡	noxfile.py	341	except Exception:	CODE
LOW	noxfile.py	403	except Exception:	CODE
LOW	noxfile.py	1108	except Exception:	CODE
LOW	guide/src/migration.md	1717	except Exception as e:	CODE
LOW⚡	guide/src/debugging.md	318	except Exception:	CODE
LOW⚡	guide/src/debugging.md	325	except Exception as e:	CODE
MEDIUM⚡	guide/src/debugging.md	326	print(f"Error updating launch.json: {e}")	CODE
LOW	tests/test_inheritance.rs	229	except Exception as e:	CODE
LOW	src/types/traceback.rs	158	except Exception as e:	CODE

Decorative Section Separators4 hits · 12 pts

Severity	File	Line	Snippet	Context
MEDIUM	guide/glossary_linker.py	66	# ---------------------------------------------------------------------------	COMMENT
MEDIUM	guide/glossary_linker.py	68	# ---------------------------------------------------------------------------	COMMENT
MEDIUM	guide/glossary_linker.py	183	# ---------------------------------------------------------------------------	COMMENT
MEDIUM	guide/glossary_linker.py	185	# ---------------------------------------------------------------------------	COMMENT

Unused Imports9 hits · 9 pts

Severity	File	Line	Context
LOW	noxfile.py	1	CODE
LOW	examples/plugin/plugin_api/tests/test_import.py	2	CODE
LOW	examples/maturin-starter/maturin_starter/__init__.py	2	CODE
LOW	examples/maturin-starter/maturin_starter/__init__.py	5	CODE
LOW	examples/word-count/word_count/__init__.py	1	CODE
LOW	examples/word-count/word_count/__init__.py	1	CODE
LOW	examples/word-count/word_count/__init__.py	1	CODE
LOW	…tools-rust-starter/setuptools_rust_starter/__init__.py	2	CODE
LOW	…tools-rust-starter/setuptools_rust_starter/__init__.py	5	CODE

Deep Nesting7 hits · 7 pts

Severity	File	Line	Context
LOW	noxfile.py	812	CODE
LOW	noxfile.py	987	CODE
LOW	noxfile.py	1556	CODE
LOW	noxfile.py	1585	CODE
LOW	guide/glossary_linker.py	84	CODE
LOW	pytests/tests/test_enums.py	74	CODE
LOW	pytests/tests/test_enums.py	105	CODE

Synthetic Comment Markers1 hit · 5 pts

Severity	File	Line	Snippet	Context
HIGH	Contributing.md	38	We prefer that authors disclose if a contribution is generated by AI so we can take that into account without guesswork.	CODE

Empty Error Handlers1 hit · 5 pts

Severity	File	Line	Snippet	Context
HIGH	pytests/noxfile.py	27	except CommandFailed:	CODE

TODO Padding3 hits · 4 pts

Severity	File	Line	Snippet	Context
LOW	pyo3-macros-backend/src/py_expr.rs	186	_ => PyConstant::Ellipsis, // TODO: implement ByteStr and CStr	CODE
LOW	pyo3-macros-backend/src/frompyobject.rs	475	// TODO: implement using a Protocol?	COMMENT
LOW	pyo3-macros-backend/src/intopyobject.rs	381	// TODO: implement using a Protocol?	COMMENT

Self-Referential Comments1 hit · 3 pts

Severity	File	Line	Snippet	Context
MEDIUM	pytests/tests/test_enums_match.py	1	# This file is only collected when Python >= 3.10, because it tests match syntax.	COMMENT

Modern Structural Boilerplate2 hits · 2 pts

Severity	File	Line	Snippet	Context
LOW	noxfile.py	224	def set_coverage_env(session: nox.Session) -> None:	CODE
LOW	examples/word-count/word_count/__init__.py	3	__all__ = [	CODE

Redundant / Tautological Comments1 hit · 2 pts

Severity	File	Line	Snippet	Context
LOW	.github/workflows/ci.yml	878	# Check if all needs were successful or skipped.	COMMENT

Example Usage Blocks1 hit · 2 pts

Severity	File	Line	Snippet	Context
LOW	src/pyclass.rs	66	/// Usage example:	COMMENT

AI Slop Vocabulary1 hit · 2 pts

Severity	File	Line	Snippet	Context
LOW	src/pycell/impl_.rs	309	// For `#[pyclass]` types which inherit from PyAny, we can just call tp_free	COMMENT

Fake / Example Data1 hit · 1 pts

Severity	File	Line	Snippet	Context
LOW	guide/src/python-from-rust/calling-existing-code.md	348	let house = house_class.call1(("123 Main Street",)).unwrap();	CODE

AI Structural Patterns1 hit · 1 pts

Severity	File	Line	Snippet	Context
LOW	pytests/tests/test_pyfunctions.py	146		CODE

Maintenance and Governance Review

Risk Review · v3

What These Metrics Mean

Pattern-Signal History

Severity Breakdown

Directory Score Breakdown

Pattern Findings