aws-croniter
A Python utility for AWS cron expressions. Validate and parse AWS EventBridge cron expressions seamlessly.
Decision gist · record as of 2026-08-14
Yes. The package solves a specific, real problem (AWS cron expression handling) with low install friction, active maintenance, MIT licensing, and no known vulnerabilities. It's appropriate for any project that needs to work programmatically with EventBridge schedules.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.10 or later.
- Low install friction with a single runtime dependency (python-dateutil).
- Actively maintained with a recent release.
License · maintenance · safety
MIT (permissive) — MIT license permits commercial and private use with minimal restrictions—suitable for most projects.
last release 2026-06-09 (66 days)
0 known vulnerabilities (OSV.dev, 2026-08-14) · 94,460 downloads/mo, #13,327 on PyPI
Alternatives
Verify before relying
from aws_croniter import AwsCroniter
from datetime import datetime, timezone
cron_expression = "0 12 15 * ? 2023"
aws_cron = AwsCroniter(cron_expression)
start_date = datetime(2023, 12, 14, tzinfo=timezone.utc)
next_occurrence = aws_cron.get_next(start_date)
print(next_occurrence)- Whether the library handles all AWS-specific cron syntax features (?, L, W, #) correctly in practice.
- Performance characteristics when computing conflicts between many schedules or large date ranges.
What it is and what it does
AWS Croniter is a Python library for working with AWS EventBridge cron expressions, which follow a different syntax than standard Unix cron. It validates expressions against AWS rules, parses them with detailed error messages, and computes schedule occurrences—including next/previous times, all occurrences in a date range, and conflicts between multiple schedules. The library handles AWS-specific syntax elements like the wildcard `?`, day-of-week aliases (SUN, MON, etc.), and month aliases (JAN, FEB, etc.).
You would use this when building AWS automation tools, scheduling systems, or applications that need to work programmatically with EventBridge cron rules. It combines validation and calculation in one package, eliminating the need to integrate separate tools. The single runtime dependency is python-dateutil, and it requires Python 3.10 or later.
Use it for
- Validate AWS EventBridge cron expressions before deploying scheduled rules to avoid runtime failures.
- Calculate the next execution time of an EventBridge rule to show users when an event will trigger.
- Find all occurrences of a schedule within a date range for reporting or audit purposes.
- Detect scheduling conflicts between multiple EventBridge rules within a bounded time window.
- Build a cron expression builder or scheduler UI that needs to parse and interpret AWS cron syntax.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
The package solves a specific, real problem (AWS cron expression handling) with low install friction, active maintenance, MIT licensing, and no known vulnerabilities. It's appropriate for any project that needs to work programmatically with EventBridge schedules.
Install
aws-croniter on PyPI
Before you install
Low install friction with a single runtime dependency (python-dateutil). Actively maintained with a recent release.
Requires Python 3.10 or later.
License in practice
MIT license permits commercial and private use with minimal restrictions—suitable for most projects.
Quickstart
from aws_croniter import AwsCroniter
from datetime import datetime, timezone
cron_expression = "0 12 15 * ? 2023"
aws_cron = AwsCroniter(cron_expression)
start_date = datetime(2023, 12, 14, tzinfo=timezone.utc)
next_occurrence = aws_cron.get_next(start_date)
print(next_occurrence)Verify before relying
- Whether the library handles all AWS-specific cron syntax features (?, L, W, #) correctly in practice.
- Performance characteristics when computing conflicts between many schedules or large date ranges.
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release <4.0,>=3.10 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 1 packagepython-dateutil |
| Maintenance | Actively maintained 66 days since the last release |
| First released | |
| Downloads | 94,460 / month, #13,327 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | License :: OSI Approved :: MIT LicenseProgramming Language :: Python :: 3Programming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14 |
Evidence: aws_croniter-2.1.1-py3-none-any.whl
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See also croniter · pyawscron · aws-cron-expression-validator · tzcron · cron-validator · cron-converter · cronsim · cron-schedule-triggers · pycron · local-crontab