No known security advisories.
The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.
iso8601 has 12.7M monthly downloads and 35 GitHub stars. Version 2.1.0 supports Python >=3.7,<4.0, first published in 2007.
It is showing limited recent maintenance under a permissive license, last released in Oct 2023.
It is used by 295 tracked packages, including oslo-utils, keystoneauth1 and axiom-py.
Package Insights
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
40
Popularity
33
Adoption
90
Community
60
Provenance
0
How the maintenance status was determined
Last commit
644 days ago
Monthly downloads
12,719,437
Active
Activity within 30 days
Stable
Activity within 31-180 days
Minimal
Activity within 181-365 days, or no activity data
•
At Risk
No activity for > 365 days, but > 10,000 monthly downloads
Archived
Repository flagged as archived on GitHub
How the popularity category was determined
Monthly downloads
12,719,437
Stars
35
Stars per 1k downloads
0.00
•
Industry Standard
> 10,000,000 monthly downloads
Hidden Gem
< 0.5 stars per 1k downloads and > 100,000 monthly downloads
Community Favorite
> 5 stars per 1k downloads
Rising Star
Balanced ratio of stars to downloads
Unknown
Fewer than 1,000 monthly downloads, or no star data
How download momentum is calculated
Week daily avg
473,765
Month daily avg
423,981
Momentum
+11.7%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100Python version support tiers
requires_python
>=3.7,<4.0
Cutting Edge
Minimum supported version is 3.12 or newer
Modern
Minimum supported version is 3.9, 3.10, or 3.11
•
Legacy
Supports 3.8 or older (or Python 2)
Unknown
No requires_python specified or unparseable
License categories
License
MIT
•
Permissive
MIT, Apache, BSD, ISC, Unlicense, CC0, etc.
Copyleft
GPL, LGPL, AGPL, MPL, EPL, etc.
Proprietary
Commercial, all rights reserved, custom EULAs
Unknown
No license specified, or none of the above match
How the release cadence was determined
Last release
1008 days ago
Total releases
25
Releases/year
1.3
Rapid
Last release within 365 days and > 12 releases/year
Regular
Last release within 365 days
Slow
Last release 366-730 days ago
•
Stalled
Last release > 730 days ago, or no releases
Unknown
No usable release date available
How contributor risk was determined
Contributors
14
Monthly downloads
12,719,437
High Load
≤ 2 contributors and ≥ 50,000 monthly downloads
Moderate Load
< 10 contributors and ≥ 500,000 monthly downloads
•
Low Load
< 25 contributors and ≥ 5,000,000 monthly downloads, or sole maintainer with ≥ 10,000 monthly downloads
Balanced
Enough contributors for the package's popularity
Unknown
No contributor data available
Engagement
59
Issue Burden
-
per 1k stars
Discussions
-
per 1k stars
Fork Ratio
107.7%
contrib / forks
Stale Release
364d
PR Velocity
Quiet
Weekly Downloads
GitHub Stars
Not all downloads include detailed metadata. Breakdowns reflect the subset that does.
Downloads by OS
Linux
203.8K
Windows
2.4K
macOS
936
Python Versions
3.12
33.8%
62.7K
3.10
28.8%
53.4K
3.11
18.1%
33.7K
3.13
13.0%
24.2K
3.9
6.3%
11.7K
Top Countries
1.
US
148.7K
US
2.
DE
7.8K
DE
3.
IN
5.4K
IN
4.
SG
4.2K
SG
5.
IE
3.9K
IE
6.
FR
3.5K
FR
7.
JP
3.2K
JP
8.
VN
3.1K
VN
9.
CN
3.1K
CN
10.
FI
2.8K
FI
Dependencies
0
No dependencies
Used By
295
- oslo-utils
- keystoneauth1
- axiom-py
- openstacksdk
- kopf
- flagsmith
- python-subunit
- python-openstackclient
- tortoise-orm
- python-novaclient
- lakeshore
- python-heatclient
- pyseto
- infi-clickhouse-orm
- gnocchiclient
- stac-fastapi-types
- keeper-secrets-manager-helper
- datalad
- testrepository
- python-vitrageclient
- clx-sdk-xms
- in-toto
- yoti
- asyncdb
- metaapi-cloud-sdk
- attachment-downloader
- fdk
- horizon
- deform
- metaapi-cloud-copyfactory-sdk
- metaapi-cloud-metastats-sdk
- docassemble-webapp
- zulu
- python-ceilometerclient
- qcs-api-client
- aw-core
- sob
- taospy
- python-tackerclient
- firestore
- crossbar
- vunnel
- authenticator
- aptly-api-client
- rowingdata
- pod5
- navconfig
- cobalt
- swh-model
- nova
Package Information
License
MIT
First Release
January 14, 2007
Last Release
2 years ago
Last Commit
1 year ago
Latest Version
2.1.0
Total Releases
25
Contributors
14
Open PRs
4
Archived
No
Author
Michael Twomey
Python Versions
3
3.7
3.8
3.9
3.10
3.11
Wheels
py2
py3
py33
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh