Registry / aws / aws-cron-expression-validator

aws-cron-expression-validator

library1.1.15pypypiunverified

Validates AWS EventBridge cron expressions, which are similar to, but not compatible with Unix style cron expressions. Current version is 1.1.15. Release cadence is irregular.

aws

pip install aws-cron-expression-validator

github ↗package ↗changelog ↗

INSTALL

IMPORT

SIG · AWS-CRON-EXPRESSIO

aws-cron-expression-validator

awspythonv1.1.15

Install

1.6s avg

Import

—

Disk

16MB

Pass rate

10/ 10

Env Coverage10 / 10

glibc

3.9–3.13

musl

3.9–3.13

Install & Compatibility

Where this runs

tested against v1.1.15 · 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 · 17.8MB

glibc

py 3.10–3.95 runs

installs and imports cleanly · install 1.6s · import 0.000s · 18MB

16MB installed

● package 16MB

Code

Verified usage

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

validate_cron_expression

✓ from aws_cron_expression_validator import validate_cron_expression

✗ from aws_cron_expression_validator import validate_cron_expression

Basic usage: validate an AWS EventBridge cron expression.

from aws_cron_expression_validator import validate_cron_expression cron = 'cron(0 12 * * ? *)' try: validate_cron_expression(cron) print('Valid cron expression') except ValueError as e: print(f'Invalid: {e}')

Debug

Known issues

gotchaThe library expects the full 'cron(...)' string including the 'cron' prefix, not just the inner expression.

fix

Always wrap your expression with 'cron(...)'. Example: 'cron(0 12 * * ? *)'.

affects: all

gotchaDay-of-week and day-of-month fields cannot both be specified as non-'?' in AWS cron. The library enforces this but may not give a clear error.

fix

Use '?' in one of the two fields (day-of-week or day-of-month) as per AWS requirements.

affects: all

deprecatedThe library's validation is string-based and may not catch all AWS-specific constraints (e.g., leap years). Future versions may add more checks.

fix

Be aware that validation is not exhaustive; test your cron expressions against AWS EventBridge.

affects: <2.0.0

Upgrade

Version history

1.1.15latest on PyPI · released Nov 26, 2025

Audit

Dependencies

No dependency data recorded yet.

Agent activity

25 hits · last 30 days

node

Resources

githubhttps://github.com/grumBit/aws_cron_expression_validator ↗

packagehttps://pypi.org/project/aws-cron-expression-validator/ ↗

changeloghttps://github.com/grumBit/aws_cron_expression_validator/blob/master/RELEASENOTES.md ↗