re-assert

library1.1.0pypypi✓ verified 85d ago

A library to show where your regex match assertion failed. It provides a helper to clarify regex failures in tests. Current version: 1.1.0, release cadence: low, maintained by asottile.

testing

pip install re-assert

github ↗package ↗

INSTALL

IMPORT

SIG · RE-ASSERT

re-assert

testingpythonv1.1.0

Install

2.2s avg

Import

—

Disk

19MB

Pass rate

10/ 10

Env Coverage10 / 10

glibc

3.9–3.13

musl

3.9–3.13

Install & Compatibility

Where this runs

tested against v1.1.0 · 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 3.10–3.95 runs

installs and imports cleanly · install 0.0s · import 0.000s · 20.5MB

glibc

py 3.10–3.95 runs

installs and imports cleanly · install 2.2s · import 0.000s · 21MB

19MB installed

● package 19MB

Code

Verified usage

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

Matches

✓ from re_assert import Matches

✗ from re_assert import ReAssert

Pattern

✓ from re_assert import Pattern

regex

✓ from re_assert import regex

Basic usage: create a ReAssert object with a regex pattern, then compare with a string. If match fails, it prints where and why.

from re_assert import ReAssert # Pattern with group names pattern = r"(?P<name>\w+) (?P<age>\d+)" matcher = ReAssert(pattern) # This assertion will fail with a detailed message # matcher == 'John 30 extra' # Uncomment to see error: matcher == 'John 30' (this matches)

Debug

Known issues

gotchaReAssert uses __eq__ to perform matching. Ensure you are comparing the ReAssert object to a string, not the other way around.

fix

Use 'matcher == string' pattern.

affects: all

gotchaThe library is designed for testing; it does not raise exceptions but returns False and prints diagnostic info. Do not use it for production regex validation without assertions.

fix

Use in test suites with pytest or unittest.

affects: all

Upgrade

Version history

1.1.0latest on PyPI · released Feb 25, 2020

Audit

Dependencies

No dependency data recorded yet.

Agent activity

8 hits · last 30 days

node

Resources

githubhttps://github.com/asottile/re-assert ↗

packagehttps://pypi.org/project/re-assert/ ↗