password-strength
Password strength and validation
Decision gist · record as of 2026-08-14
No. The package is abandoned (last updated 2019, repository archived) with no maintenance or security patches forthcoming. While it has low install friction and a permissive license, relying on unmaintained password validation code poses a security and compatibility risk. For new projects, use an actively maintained alternative; for legacy systems already using it, plan a migration.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Low install friction with a single lightweight dependency (six).
- However, the package is abandoned—last release was in 2019 and the repository was archived after 2779 days without updates.
- No active maintenance or security patches should be expected.
License · maintenance · safety
BSD (permissive) — Licensed under BSD (permissive), which allows commercial and private use with minimal restrictions. No copyleft obligations.
last release 2019-01-04 (2779 days) · last repo commit 2020-06-05 · 73 stars · archived
0 known vulnerabilities (OSV.dev, 2026-08-14) · 201,864 downloads/mo, #9,659 on PyPI
Alternatives
Verify before relying
from password_strength import PasswordPolicy
policy = PasswordPolicy.from_names(length=8, uppercase=2, numbers=2, special=2)
results = policy.test('ABcd12!@')
print(results) # [] means password passes- Whether the package's password strength algorithm remains cryptographically sound by modern standards, given its age and lack of maintenance.
- Compatibility with current Python versions beyond the unspecified support declaration.
What it is and what it does
password-strength provides a PasswordPolicy object that lets you define and enforce password requirements—minimum length, required character types (uppercase, numbers, special characters), non-letter counts, and entropy bits. It also offers PasswordStats to analyze a password's complexity on a 0.00–0.99 scale, where 0.66 and above indicates a strong password. You create a policy once, then call .test() on candidate passwords to get back a list of failed tests, or use .strength() to get a numeric complexity score.
The package supports both rule-based validation ("must have 2 uppercase and 2 special characters") and entropy-based validation ("must have 30 entropy bits"), as well as a strength-score approach that accounts for character variety and alphabet size. It handles Unicode passwords, including international character sets.
Use it for
- Enforce password requirements during user registration or password-change flows in a web application.
- Score and display real-time password strength feedback to users as they type a new password.
- Validate passwords against a corporate policy that requires specific character-type minimums.
- Analyze password entropy to ensure sufficient complexity without rigid character-type rules.
- Support multi-language password validation using Unicode character analysis.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
No.
The package is abandoned (last updated 2019, repository archived) with no maintenance or security patches forthcoming. While it has low install friction and a permissive license, relying on unmaintained password validation code poses a security and compatibility risk. For new projects, use an actively maintained alternative; for legacy systems already using it, plan a migration.
Install
password-strength on PyPI
Before you install
Low install friction with a single lightweight dependency (six). However, the package is abandoned—last release was in 2019 and the repository was archived after 2779 days without updates. No active maintenance or security patches should be expected.
License in practice
Licensed under BSD (permissive), which allows commercial and private use with minimal restrictions. No copyleft obligations.
Quickstart
from password_strength import PasswordPolicy
policy = PasswordPolicy.from_names(length=8, uppercase=2, numbers=2, special=2)
results = policy.test('ABcd12!@')
print(results) # [] means password passesVerify before relying
- Whether the package's password strength algorithm remains cryptographically sound by modern standards, given its age and lack of maintenance.
- Compatibility with current Python versions beyond the unspecified support declaration.
Package facts
| License | BSD permissive |
| Python support | Not specified |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 1 packagesix |
| Maintenance | Abandoned 2,779 days since the last release |
| Last repo commit | repository archived |
| First released | |
| Downloads | 201,864 / month, #9,659 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableIntended Audience :: DevelopersNatural Language :: EnglishOperating System :: OS IndependentProgramming Language :: Python :: 2Programming Language :: Python :: 3Topic :: Software Development :: Libraries :: Python Modules |
Evidence: password_strength-0.0.3.post2-py2.py3-none-any.whl
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