allpairspy

library2.5.1pypypi✓ verified 52d ago

allpairspy is an open-source Python library for generating pairwise (all-pairs) test combinations. It helps reduce the number of test cases while ensuring comprehensive coverage by covering all possible pairs of input parameter values. The library is actively maintained with steady, though infrequent, releases.

testing

pip install allpairspy

github ↗package ↗

Install & Compatibility

Where this runs

tested against v2.5.1 · pip install

no network on importno background threads

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

py 3.10–3.920 runs

installs and imports cleanly · install 0.0s · import 0.000s · 17.8MB

glibc

py 3.10–3.920 runs

installs and imports cleanly · install 1.5s · import 0.000s · 18MB

16MB installed

● package 16MB

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

AllPairs

✓ from allpairspy import AllPairs

This example demonstrates how to generate pairwise test combinations from a list of input parameters. Each generated 'pairs' item is a combination that covers at least one occurrence of every possible pair of values from the input parameters.

from allpairspy import AllPairs parameters = [ ["Brand X", "Brand Y"], ["98", "NT", "2000", "XP"], ["Internal", "Modem"], ["Salaried", "Hourly", "Part-Time", "Contr."], [6, 10, 15, 30, 60], ] print("PAIRWISE:") for i, pairs in enumerate(AllPairs(parameters)): print(f"{i:2d}: {pairs}")

Debug

Known issues

breakingVersion 2.5.1 dropped support for Python 2.7, 3.5, and 3.6. Ensure your Python environment is 3.7 or newer.

fix

Upgrade Python to 3.7+ or use an older `allpairspy` version (e.g., `<2.5.1` for Python 3.6).

affects: >=2.5.1

breakingVersion 2.5.0 dropped support for Python 3.4.

fix

Upgrade Python to 3.5+ or use an older `allpairspy` version (e.g., `<2.5.0` for Python 3.4).

affects: >=2.5.0

gotchaSupport for `OrderedDict` as a data source was added in version 2.3.0. If you need to use `OrderedDict`, ensure you are on this version or newer.

fix

Upgrade `allpairspy` to 2.3.0 or later: `pip install --upgrade allpairspy`.

affects: <2.3.0

Errors

Common errors & fixes

ModuleNotFoundError: No module named 'allpairspy'

The allpairspy library is not installed in the current Python environment.

fix

Install the library using pip: `pip install allpairspy`.

TypeError: AllPairs() takes 1 positional argument but 2 were given

The constructor expects a single iterable (e.g., a list of lists) containing all parameter sets, not multiple separate arguments.

fix

Wrap your parameter sets in a single list: `AllPairs([["A", "B"], [1, 2]])` instead of `AllPairs(["A", "B"], [1, 2])`.

ValueError: Parameters list must not be empty

The list of parameters provided to `AllPairs` is empty or contains empty sub-lists, which prevents combination generation.

fix

Ensure the `parameters` list contains at least one non-empty list of values for each factor.

Upgrade

Version history

2.5.1latest on PyPI

Audit

Dependencies

No dependency data recorded yet.

Agent activity

84 hits · last 30 days

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Resources

githubhttps://github.com/thombashi/allpairspy ↗

packagehttps://pypi.org/project/allpairspy/ ↗