Gradle / Kotlin Version Regex for Python

What this pattern does

This page provides a comprehensive, battle-tested regular expression for matching gradle / kotlin version, ported and verified for Python. A rigorously tested regex reduces debugging time and protects your application from edge-case failures. The snippet below is ready to drop into your Python project — whether you're validating in a Django view, a FastAPI endpoint, or a standalone data processing script.

Python Implementation

# Gradle / Kotlin Version
# ReDoS-safe | RegexVault — Dev & Systems > SemVer

import re

gradle_kotlin_version_pattern = re.compile(r'^([0-9]+)\.([0-9]+)(?:\.([0-9]+))?(?:[.\-]([a-zA-Z0-9][a-zA-Z0-9.\-]*[a-zA-Z0-9]|[a-zA-Z0-9]))?$')

def validate_gradle_kotlin_version(value: str) -> bool:
    return bool(gradle_kotlin_version_pattern.fullmatch(value))

# Example
print(validate_gradle_kotlin_version("7.0"))  # True

Test Cases

When to use this pattern

This pattern is drawn from the Dev & Systems > SemVer category and carries a ReDoS-safe certification. That matters for Python developers because particularly important in Python web servers where CPU-bound regex operations can stall concurrent request handling. RegexVault audits patterns against known backtracking attack vectors, ensuring you have the necessary context before using this regex in a high-stakes production environment.

Common Pitfalls

Technical Notes

Gradle and Kotlin version strings often include qualifiers like -rc-1, -Beta, -M1 (milestone), -RELEASE, or -SNAPSHOT. The pattern is permissive on the qualifier to accommodate the wide variety of conventions.