No known security advisories.
The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.
lark has 75.9M monthly downloads and 6K GitHub stars. Version 1.3.1 supports Python 3.8+, first published in 2013.
It is stably maintained under a permissive license, last released in Oct 2025.
It is used by 815 tracked packages, including rfc3987-syntax, python-hcl2 and vllm.
GitHub topics include parser, parsing-library and parser-library.
Package Insights
Package Risks
- No releases in 220 days despite active commits
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
80
Popularity
79
Adoption
70
Community
70
Provenance
0
How the maintenance status was determined
Last commit
32 days ago
Monthly downloads
75,888,539
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
75,888,539
Stars
5,923
Stars per 1k downloads
0.08
•
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
2,283,594
Month daily avg
2,529,618
Momentum
-9.7%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100Python version support tiers
requires_python
>=3.8
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
252 days ago
Total releases
24
Releases/year
1.9
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
124
Monthly downloads
75,888,539
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
82
Issue Burden
19.8
per 1k stars
Discussions
15.2
per 1k stars
Fork Ratio
25.2%
contrib / forks
Stale Release
220d
PR Velocity
Quiet
Weekly Downloads
GitHub Stars
Not all downloads include detailed metadata. Breakdowns reflect the subset that does.
Downloads by OS
Linux
1.2M
Windows
52.2K
macOS
22.4K
Python Versions
3.12
34.6%
423.8K
3.11
26.0%
318.9K
3.10
21.2%
259.9K
3.13
13.0%
159.4K
3.14
5.1%
62.6K
Top Countries
1.
US
858.7K
US
2.
IE
72.5K
IE
3.
NL
57.2K
NL
4.
SG
48.2K
SG
5.
FI
38.2K
FI
6.
DE
26.6K
DE
7.
IN
23.3K
IN
8.
JP
17.8K
JP
9.
KR
17.6K
KR
10.
GB
17.6K
GB
Dependencies
0
4 optional dependencies
- atomicwrites[atomic-cache]
- interegular[interegular]
- js2py[nearley]
- regex[regex]
Used By
815
- rfc3987-syntax
- python-hcl2
- vllm
- rtfde
- cel-python
- pycep-parser
- bc-python-hcl2
- crawl4ai
- pysmi
- langchain-mongodb
- pyocd
- starrocks
- multi-storage-client
- ifcopenshell
- eql
- nemoguardrails
- dotenv-linter
- fmpy
- vllm-cpu
- pccm
- pytket
- gdtoolkit
- litert-converter
- pymantic
- sax
- pygeofilter
- snyk-agent-scan
- django-socio-grpc
- ucumvert
- torchmonarch
- assemblyline
- ert
- eth-brownie
- lark-js
- vllm-tpu
- starknet-py
- aws-json-term-matcher
- kgcl-schema
- py-build-cmake
- miniwdl
- gqlppy
- pyxform
- synapse
- pyzx
- kauldron
- backend-ai-manager
- datacube
- fprime-fpy
- nanoargs
- wal-lang
GitHub Topics
Tags from the package's GitHub repository describing what it does.
Package Information
License
MIT
First Release
December 21, 2013
Last Release
8 months ago
Last Commit
1 month ago
Latest Version
1.3.1
Total Releases
24
Contributors
124
Open PRs
36
Archived
No
Python Versions
3
Wheels
py2
py3
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh