iregexp-check
Decision gist · record as of 2026-08-14
Yes, if you need RFC 9485 I-Regexp validation and can tolerate aging maintenance. The package is permissively licensed, has no dependencies, and covers current Python versions. However, the 689-day gap since release and lack of recent commits suggest limited active development; verify that the package still meets your compliance needs before relying on it in production.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.8 or later; compiled wheels are provided for common platforms but may require a build step on unsupported architectures.
- Medium install friction due to compiled wheels; the package is aging (689 days since release, last commit 2025-08-24) with no active development signals, though the repository remains unarchived and the codebase supports current Python versions (3.8–3.13).
License · maintenance · safety
permissive license (permissive) — Licensed under MIT (permissive), so you can use, modify, and distribute the package freely with minimal restrictions.
last release 2024-09-24 (689 days) · last repo commit 2025-08-24
0 known vulnerabilities (OSV.dev, 2026-08-14) · 492,387 downloads/mo, #6,360 on PyPI
Alternatives
Verify before relying
pip install iregexp_check
from iregexp_check import check
print(check(r"[ab]{3}")) # True
print(check(r"[0-9]*?")) # False- Whether the package is actively maintained or if the 689-day gap since last release indicates abandonment.
- Real-world coverage of I-Regexp edge cases and how strictly it enforces RFC 9485 compliance.
- Performance characteristics when validating large or complex regex patterns.
What it is and what it does
iregexp_check is a Python binding to a Rust implementation that validates whether a regular expression conforms to RFC 9485 I-Regexp, a standardized regex format intended to be portable across different systems and programming languages. It provides a single function, `check()`, that takes a regex pattern string and returns True if the pattern is valid I-Regexp, False otherwise.
The package targets developers who need to ensure regex patterns will work consistently across interoperable systems or who are building tools that must enforce I-Regexp compliance. It has no runtime dependencies and is distributed as compiled wheels for most common platforms, though it carries medium install friction due to its compiled nature.
Use it for
- Validate user-supplied regex patterns in web applications before storing or executing them against I-Regexp compliance rules.
- Enforce regex portability in code review or CI/CD pipelines by checking patterns conform to RFC 9485.
- Build regex linters or validation tools that need to reject non-portable regex syntax early.
- Test regex patterns intended for use in systems or languages that only support I-Regexp format.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you need RFC 9485 I-Regexp validation and can tolerate aging maintenance.
The package is permissively licensed, has no dependencies, and covers current Python versions. However, the 689-day gap since release and lack of recent commits suggest limited active development; verify that the package still meets your compliance needs before relying on it in production.
Install
iregexp-check on PyPI
Before you install
Medium install friction due to compiled wheels; the package is aging (689 days since release, last commit 2025-08-24) with no active development signals, though the repository remains unarchived and the codebase supports current Python versions (3.8–3.13).
Requires Python 3.8 or later; compiled wheels are provided for common platforms but may require a build step on unsupported architectures.
License in practice
Licensed under MIT (permissive), so you can use, modify, and distribute the package freely with minimal restrictions.
Quickstart
pip install iregexp_check
from iregexp_check import check
print(check(r"[ab]{3}")) # True
print(check(r"[0-9]*?")) # FalseVerify before relying
- Whether the package is actively maintained or if the 689-day gap since last release indicates abandonment.
- Real-world coverage of I-Regexp edge cases and how strictly it enforces RFC 9485 compliance.
- Performance characteristics when validating large or complex regex patterns.
Package facts
| License | permissive license permissive |
| Python support | Supports the current Python release >=3.8 |
| Install friction | Medium. Platform-specific wheel |
| Runtime dependencies | None |
| Maintenance | Aging 689 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 492,387 / month, #6,360 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 4 - BetaIntended Audience :: DevelopersLicense :: OSI Approved :: MIT LicenseProgramming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.8Programming Language :: Python :: 3.9Programming Language :: Python :: Implementation :: CPythonProgramming Language :: Python :: Implementation :: PyPyProgramming Language :: Rust |
Evidence: iregexp_check-0.1.4-cp38-abi3-macosx_10_12_x86_64.whl; iregexp_check-0.1.4-cp38-abi3-macosx_11_0_arm64.whl; iregexp_check-0.1.4-cp38-abi3-manylinux_2_17_aarch64.manylinux2014_aarch64.whl; iregexp_check-0.1.4-cp38-abi3-manylinux_2_17_armv7l.manylinux2014_armv7l.whl; iregexp_check-0.1.4-cp38-abi3-manylinux_2_17_ppc64le.manylinux2014_ppc64le.whl; iregexp_check-0.1.4-cp38-abi3-manylinux_2_17_s390x.manylinux2014_s390x.whl; iregexp_check-0.1.4-cp38-abi3-manylinux_2_17_x86_64.manylinux2014_x86_64.whl; iregexp_check-0.1.4-cp38-abi3-manylinux_2_5_i686.manylinux1_i686.whl; iregexp_check-0.1.4-cp38-abi3-musllinux_1_2_aarch64.whl; iregexp_check-0.1.4-cp38-abi3-musllinux_1_2_armv7l.whl; iregexp_check-0.1.4-cp38-abi3-musllinux_1_2_i686.whl; iregexp_check-0.1.4-cp38-abi3-musllinux_1_2_x86_64.whl; iregexp_check-0.1.4-cp38-abi3-win32.whl; iregexp_check-0.1.4-cp38-abi3-win_amd64.whl
Tags
Let your AI agent find packages like this
Example. Real query, live index.
You found this page by searching. An agent finds it by wishing: SkillFed indexes 14,416 PyPI packages by what they can do, searchable in plain language.
wish › “RFC 9485 I-Regexp validation”
- iregexp-checkValidates regular expressions against RFC 9485 I-Regexp, an…
- fqdnValidates fully-qualified domain names (FQDNs) against RFC 1123…
- rfc3986Parses, validates, and normalizes URIs according to RFC 3986,…
Give your agent the search over MCP, or paste the wish link into any chat.
More Text Processing packages
A drop-in replacement for Python's standard `re` module that adds advanced regex features like nested sets, fuzzy matching, lookaround in conditionals, and full Unicode case-folding while maintaining backward compatibility.
pyparsing provides a library for building text parsers directly in Python code using composable grammar classes, handling quoted strings, whitespace variation, and embedded comments without regex or lex/yacc.
Install it if you need to parse text or define grammars programmatically.
fonttools manipulates font files in multiple formats (TrueType, OpenType, AFM, Type 1, Mac-specific) and includes TTX, a tool to convert fonts to and from XML text format.
Install it if you need to read, write, or manipulate fonts programmatically or via the TTX command-line tool.
Docutils converts plaintext documentation in reStructuredText format into multiple output formats including HTML, XML, and LaTeX using a modular processing system.
RapidFuzz provides fast fuzzy string matching using Levenshtein Distance and related metrics, implemented mostly in C++ with Python bindings for rapid similarity scoring and approximate string matching.
Install it if you need fuzzy string matching; it's a solid replacement for FuzzyWuzzy with better licensing and performance.
tinycss2 parses CSS strings into token and block objects, and generates CSS strings from those objects, following the CSS Syntax Level 3 specification without enforcing specific properties or values.
Install it if your project requires CSS tokenization or syntax manipulation.
See also regexploit · flpc · regress · exrex · pytest-regex · rfc3339-validator · greenery · emval · mailchecker · rule-engine