pip install pyflakes==2.4.0

passive checker of Python programs

Source
Among top 1000 packages on PyPI.
Over 37.9M downloads in the last 90 days.

Commonly used with pyflakes

Based on how often these packages appear together in public requirements.txt files on GitHub.

pep8

Python style guide checker

flake8-docstrings

Extension for flake8 which uses pydocstyle to check docstrings

weakrefset

A WeakSet class for storing objects using weak references.

pep8-naming

Check PEP-8 naming conventions, plugin for flake8

flake8-commas

Flake8 lint for trailing commas.

pycodestyle

Python style guide checker

importmagic

Python Import Magic - automagically add, remove and manage imports

flake8-polyfill

Polyfill package for Flake8 plugins

mccabe

McCabe checker, plugin for flake8

flake8-todo

TODO notes checker, plugin for flake8

flake8-print

print statement checker plugin for flake8

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.

flake8-builtins

Check for python builtins being used as variables or parameters.

flake8

the modular source code checker: pep8 pyflakes and co

flake8-tuple

Check code for 1 element tuple.

flake8-comprehensions

A flake8 plugin to help you write better list/set/dict comprehensions.

pep257

Python docstring style checker

cdmgcplugin

Codimension IDE garbage collector plugin

qutepart

Code editor component for PyQt5

Version usage of pyflakes

Proportion of downloaded versions in the last 3 months (only versions over 1%).

2.3.1

53.38%

2.4.0

16.60%

2.2.0

15.10%

2.1.1

9.96%

1.6.0

1.53%

2.0.0

1.01%