flake8-comprehensions 1.0.0

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

Flake8 Comprehensions

A flake8 plugin that helps you write better list/set/dict comprehensions.

• Free software: ISC license

Installation

Install from pip with:

pip install flake8-comprehensions

It will then automatically be run as part of flake8; you can check it has been picked up with:

$ flake8 --version
2.4.1 (pep8: 1.7.0, pyflakes: 0.8.1, flake8-comprehensions: 1.0.0, mccabe: 0.3.1) CPython 2.7.11 on Darwin

Rules

C400: Unnecessary generator

Complains about unnecessary use of a generator when a list/set/dict comprehension would do:

For example, an unnecessary usage of list() plus a generator, instead of a list comprehension:

• list(f(x) for x in foo) -> [f(x) for x in foo]

This triggers a message like:

$ flake8 file.py
file.py:1:1: C400 Unnecessary generator - rewrite as a list comprehension.

This works similarly for set() and dict() with generators instead of their respective comprehensions.

History

Pending Release

• New release notes here

1.0.0 (2016-04-05)

• C400 rule that complains about an unnecessary usage of a generator when a list/set/dict comprehension would do.