No known security advisories.
The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.
py7zr has 8M monthly downloads and 552 GitHub stars. Version 1.1.3 supports Python 3.10+, first published in 2019.
It is actively maintained under a copyleft license, last released in Jun 2026.
It is built on top of backports-zstd, brotli and brotlicffi. It is used by 234 tracked packages, including aqtinstall, esphome and voxel51-eta.
GitHub topics include 7zip, lzma2 and decompression.
Package Insights
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
90
Popularity
57
Adoption
90
Community
65
Provenance
100
How the maintenance status was determined
Last commit
10 days ago
Monthly downloads
8,001,152
•
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
8,001,152
Stars
552
Stars per 1k downloads
0.07
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
301,916
Month daily avg
266,705
Momentum
+13.2%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100Python version support tiers
requires_python
>=3.10
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
LGPL-2.1-or-later
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
19 days ago
Total releases
165
Releases/year
22.9
•
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
59
Monthly downloads
8,001,152
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
79
Issue Burden
61.6
per 1k stars
Discussions
83.3
per 1k stars
Fork Ratio
65.6%
contrib / forks
Stale Release
No
PR Velocity
Quiet
Weekly Downloads
GitHub Stars
Not all downloads include detailed metadata. Breakdowns reflect the subset that does.
Downloads by OS
Linux
181.9K
Windows
14.0K
macOS
4.9K
Python Versions
3.12
46.0%
86.6K
3.11
21.9%
41.3K
3.10
17.7%
33.4K
3.7
7.7%
14.6K
3.13
6.5%
12.3K
Top Countries
1.
US
138.3K
US
2.
IE
19.3K
IE
3.
IN
7.7K
IN
4.
JP
6.8K
JP
5.
NL
5.2K
NL
6.
BR
4.1K
BR
7.
DE
2.6K
DE
8.
CA
2.1K
CA
9.
CN
1.8K
CN
10.
SG
1.8K
SG
Dependencies
10
- backports-zstd >=1.0.0
- brotli >=1.2.0
- brotlicffi >=1.2.0.0
- inflate64 >=1.0.4
- multivolumefile >=0.2.3
- psutil
- pybcj >=1.0.6
- pycryptodomex >=3.20.0
- pyppmd >=1.3.1
- texttable
32 optional dependencies
- black[check]
- check-manifest[check]
- coverage[test]
- coveralls[test]
- docutils[docs]
- flake8[check]
- flake8-black[check]
- flake8-deprecated[check]
- flake8-isort[check]
- isort[check]
- lxml[check]
- mypy[check]
- mypy-extensions[check]
- py-cpuinfo[test]
- pygments[check]
- pylint[check]
- pytest[test]
- pytest[debug]
- pytest-benchmark[test]
- pytest-cov[test]
- pytest-httpserver[test]
- pytest-leaks[debug]
- pytest-profiling[debug]
- pytest-remotedata[test]
- pytest-timeout[test]
- readme-renderer[check]
- requests[test]
- sphinx[docs]
- sphinx-a4doc[docs]
- sphinx-py3doc-enhanced-theme[docs]
- twine[check]
- types-psutil[check]
Used By
234
- aqtinstall
- esphome
- voxel51-eta
- gamesentenceminer
- autotrain-advanced
- flowtask
- pycox
- comfy-test
- qualys-iac-security
- ecoinvent-interface
- agi-env
- agi-node
- comicbox
- owid-datautils
- ddi-fw
- ani2xcur
- dslighting
- jolt
- reaction-utils
- undatum
- undefined-bot
- aisdb
- konata
- pyscreeps-arena
- splight-lib
- libretificacaotjcore
- pandoc-manuscript-template
- javacore-analyser
- aitraining
- spl-core
- nonebot-plugin-git-poller
- pt3s
- ferp
- sheerwater
- xbx-py11
- stpstone
- rebotics-sdk
- pure-ocean-breeze
- retrokix
- traffic
- soundata
- comiccatcher
- libjam
- splight-cli
- comicguispider
- picopt
- brevettiai
- poks
- open-geodata
- honeybee-idaice
Package Information
License
LGPL-2.1-or-later
First Release
April 22, 2019
Last Release
2 weeks ago
Last Commit
1 week ago
Latest Version
1.1.3
Total Releases
165
Contributors
59
Open PRs
5
Archived
No
Python Versions
3
3.10
3.11
3.12
3.13
3.14
Wheels
py3
py35
py36
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh