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hoimin

hoimin is a mutation-testing CLI for Python. It makes small changes to copies of your source and runs your tests to find behavior they do not check.

Install

Install from PyPI with uv:

uv tool install --python 3.14 hoimin

Wheels require Python 3.14 and support macOS Apple Silicon, Linux x86_64 (glibc), and Windows x86_64. Run uv tool update-shell if hoimin is not on PATH, then open a new shell.

Quick start

From your project directory, use a Python environment with your test dependencies installed. Replace src/calc.py with the file you want to check:

hoimin run --root . --file src/calc.py --allow-best-effort-memory --format human -- python -m pytest -q

Everything after -- is your project's test command. hoimin runs it once as a baseline, then for each selected mutation. Inspect surviving mutations to find missing assertions or test cases. --allow-best-effort-memory permits execution on macOS and Linux without delegated cgroup limits; see the resource limits.

See the usage reference for selectors, plan/verify workflows, reports, and configuration, or run hoimin --help. For contributing, see development and building and releases.

Licensed under Elastic License 2.0. See licensing details.

Metadata

Release files for hoimin 0.3.11

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Built distributions (wheels)

Table of built distributions (wheels) for hoimin 0.3.11
File Interpreter ABI Platform
hoimin-0.3.11-py3-none-win_amd64.whl Python 3 none Windows x86-64 Details
hoimin-0.3.11-py3-none-manylinux_2_17_x86_64.manylinux2014_x86_64.whl Python 3 none Linux glibc 2.17+ x86-64 Details
hoimin-0.3.11-py3-none-macosx_11_0_arm64.whl Python 3 none macOS 11.0+ ARM64 Details

Total release size: 19.0 MB

Release files / hoimin-0.3.11-py3-none-win_amd64.whl

Download URL hoimin-0.3.11-py3-none-win_amd64.whl
Size 6.5 MB
Tags Python 3 Windows x86-64
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Release files / hoimin-0.3.11-py3-none-manylinux_2_17_x86_64.manylinux2014_x86_64.whl

Download URL hoimin-0.3.11-py3-none-manylinux_2_17_x86_64.manylinux2014_x86_64.whl
Size 6.5 MB
Tags Linux glibc 2.17+ x86-64 Python 3
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Release files / hoimin-0.3.11-py3-none-macosx_11_0_arm64.whl

Download URL hoimin-0.3.11-py3-none-macosx_11_0_arm64.whl
Size 5.9 MB
Tags Python 3 macOS 11.0+ ARM64
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Release history Release notifications | RSS feed

0.4.13

3 release files

0.4.11

3 release files

0.4.10

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0.4.9

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0.4.8

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0.4.7

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0.4.3

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0.4.2

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0.4.1

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0.4.0

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0.3.16

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0.3.15

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0.3.14

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0.3.12

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This release

0.3.11 This release

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0.3.10

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0.3.9

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0.3.8

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0.3.7

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0.3.6

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0.3.5

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0.3.4

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0.3.3

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0.3.2

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0.3.1

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0.3.0

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0.2.3

3 release files

0.2.2

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0.2.1

3 release files

0.2.0

3 release files

0.1.18

3 release files

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