pytest-park 0.1.2

Organise and analyse your pytest benchmarks

pytest-park

Organise and analyse your pytest benchmarks

Features

• Load pytest-benchmark JSON artifact folders and normalize runs, groups, marks, params, and custom grouping metadata.
• Compare reference runs against candidate runs over time with per-case and per-group delta summaries.
• Build custom grouping views with precedence across custom groups, benchmark groups, marks, and params.
• Associate optional profiler artifacts with benchmark runs for code-level analysis context.
• Serve an interactive local NiceGUI dashboard for exploratory benchmark comparison.

Installation

With pip:

python -m pip install pytest-park

With uv:

uv add --group test pytest-park

How to use it

# Print version
pytest-park version

# Start interactive mode (no arguments)
pytest-park

# Inspect a benchmark folder
pytest-park load ./benchmarks

# Analyze grouping distribution
pytest-park analyze ./benchmarks --group-by group --group-by param:device

# Compare a candidate run against a named reference tag/run id
pytest-park compare ./benchmarks --reference reference --candidate candidate-v2 --group-by custom:scenario

# Compare latest run against second-latest run when --reference/--candidate are omitted
pytest-park compare ./benchmarks

# Normalize method names by removing configured postfixes
pytest-park analyze ./benchmarks --original-postfix _orig --reference-postfix _ref

# Launch interactive dashboard
pytest-park serve ./benchmarks --reference reference --original-postfix _orig --reference-postfix _ref --host 127.0.0.1 --port 8080

Benchmark folder expectations

• Input artifacts are pytest-benchmark JSON files (--benchmark-save output) stored anywhere under a folder.
• Reference selection uses explicit run id or tag metadata (metadata.run_id, metadata.tag, or fallback identifiers).
• Default comparison baseline is latest vs second-latest run when --reference and --candidate are omitted.
• Grouping defaults to: custom groups > benchmark group > marks > params.
• Custom grouping tokens include custom:<key>, group, marks, params, and param:<name>.
• Method normalization supports optional --original-postfix and --reference-postfix to align benchmark names across implementations.

pytest-benchmark group stats override

If your benchmark method names encode postfixes and parameter segments, you can override pytest_benchmark_group_stats using the helper from this package:

# tests/conftest.py
from pytest_park.pytest_benchmark import default_pytest_benchmark_group_stats


def pytest_benchmark_group_stats(config, benchmarks, group_by):
	return default_pytest_benchmark_group_stats(
		config,
		benchmarks,
		group_by,
		original_postfix="_orig",
		reference_postfix="_ref",
		group_values_by_postfix={
			"_orig": "original",
			"_ref": "reference",
			"none": "unlabeled",
		},
	)

This stores parsed parts in extra_info["pytest_park_name_parts"] with base_name, parameters, and postfix.

If you use postfixes in benchmark names, expose matching pytest-benchmark options in the same conftest.py:

def pytest_addoption(parser):
	parser.addoption("--benchmark-original-postfix", action="store", default="")
	parser.addoption("--benchmark-reference-postfix", action="store", default="")

Docs

uv run mkdocs build -f ./mkdocs.yml -d ./_build/

Update template

copier update --trust -A --vcs-ref=HEAD

Credits

This project was generated with