PyRank
Pylons

colander

A serialization/deserialization/validation library for strings, mappings and lists.
PyPI GitHub
More links
Download Stats Issue Tracker
Monthly downloads
113.6K
Weekly downloads
28.1K
GitHub stars
460

Downloads in the 30 and 7 days to October 10, 2026. Refreshed weekly.

Package Information

Latest Version
2.0
Requires Python
>=3.7
Licence
BSD-derived (http://www.repoze.org/LICENSE.txt)
Last Release
3 years ago
Author
Agendaless Consulting
First Release
March 14, 2010
Total Releases
48
Python Versions
3 3.7 3.8 3.9 3.10 3.11
No reported malware or high/critical advisories · Details

The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.

Package Insights

What's this?
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
40
Popularity
58
Adoption
70
Community
90
Provenance
0
How the maintenance status was determined
Last commit
805 days ago
Monthly downloads
113,565
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
113,565
Stars
460
Stars per 1k downloads
4.05
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
4,011
Month daily avg
3,786
Momentum
+5.9%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100
More insights and metrics
Python version support tiers
requires_python
>=3.7
Cutting Edge
Minimum supported version is 3.14 or newer
Modern
Minimum supported version is 3.11 to 3.13
• Legacy
Supports 3.10 or older (or Python 2)
Unknown
No requires_python specified or unparseable
License categories
License
BSD-derived (http://www.repoze.org/LICENSE.txt)
• 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
1382 days ago
Total releases
48
Releases/year
2.9
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
101
Monthly downloads
113,565
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
73
 
Issue Burden
73.9
per 1k stars
Discussions
0.0
per 1k stars
Fork Ratio
69.2%
contrib / forks
Stale Release
577d
 
PR Velocity
Quiet
 
Not all downloads include detailed metadata. Breakdowns reflect the subset that does.

Downloads by OS

Linux 1.6K
macOS 7
Windows 1

Python Versions

3.12
34.7% 413
3.7
21.1% 251
3.14
17.6% 209
3.11
14.4% 171
3.10
12.3% 146

Top Countries

1. US US
1.2K
2. FI FI
133
3. IE IE
106
4. KR KR
85
5. BE BE
28
6. DE DE
24
7. IN IN
21
8. FR FR
18
9. SG SG
17
10. GB GB
15

Weekly Downloads

GitHub Stars

Dependencies

0
No dependencies

Used By

40
View all 40 dependents

Repository details

Forks
146
Issues
34
Last Commit
2 years ago
Contributors
101
Open PRs
4
Archived
No

Data and sources

Tracking Since
September 26, 2026
Data Updated
October 11, 2026
Data Freshness
Fresh
Keywords
serialize deserialize validate schema validation
Sources and methodology