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PyCQA/flake8-bugbear

A plugin for Flake8 finding likely bugs and design problems in your program. Contains warnings that don't belong in pyflakes and pycodestyle. observed · 2026-09-03

github.com/PyCQA/flake8-bugbear · Python · MIT (permissive) observed · 2026-09-03

Health v2 · maintenance only

81/100

  • Activity 100
  • Release rhythm 47
  • Longevity 100
How is this computed?

round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.

  • gap_med: 41
  • age_days: 3823
  • days_rel: 277
  • days_push: 1
  • n_releases_24m: 4

Full methodology

Adoption not part of the score

1116 stars · 124 forks observed · 2026-09-03

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

flake8-bugbear is a plugin for the Flake8 linter that adds checks for likely bugs and design problems in Python code. It provides opinionated warnings that don't fit in pyflakes or pycodestyle, such as bare excepts and unreliable callable checks.

Use cases

  • find likely bugs in python code
  • add extra lint rules to flake8
  • catch bare except and other python pitfalls
  • enforce code quality checks in ci
  • lint python projects with opinionated rules

When to choose

  • you already use flake8 and want more bug-focused checks
  • you want opinionated lint rules without modifying core tools
  • you need extra static analysis for python design problems

When to avoid

  • you don't use flake8 as your linter
  • you only want PEP 8 style checking
  • you need type checking rather than linting

Facets

plugin · maturity active

linter code-review developer-tools developer-tools testing python cli cross-platform flake8 code-quality static-analysis bug-detection linting-plugin python

2 sources

Member repositories

RepositoryRoleHealth v2
PyCQA/flake8-bugbearmain81

For agents

markdown · JSON · MCP: product_card(name="PyCQA/flake8-bugbear")

Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem