Flake8 Coding plugin

Adds coding magic comment checks (coding:) to flake8.

Install

Install with pip:

$ pip install flake8-coding

You can check that flake8 has picked it up by looking for flake8_coding in the output of --version:

$ flake8 --version
2.5.4 (pep8: 1.7.0, pyflakes: 1.0.0, flake8_coding: 1.1.1, mccabe: 0.4.0) CPython 2.7.11 on Darwin

Options

accept-encodings

A comma-separated list of acceptable source code encodings for the coding: magic comments in files. Default is latin-1, utf-8.

You can pass this as a command-line argument to flake8, e.g. --accept-encodings=utf-8,utf-16, or put it in your config file, e.g.:

[flake8]
accept-encodings = utf-8,utf-16

no-accept-encodings

If activated, this disallows all coding: magic comments, no matter their encoding. This might be useful for Python 3 projects where UTF-8 is the default and you don't want other encodings used in your project.

You can pass this as a command-line argument to flake8, e.g. --no-accept-encodings, or put it in your config file, e.g.:

[flake8]
no-accept-encodings = True

Rules

C101 Coding magic comment not found

No magic encoding comment was found in the file. As per PEP-263, this must be in the first two lines of the file.

C102 Unknown encoding found in coding magic comment

The encoding found in the magic encoding comment did not match the accept-encodings option.

C103 Coding magic comment present

no-accept-encodings is set, and a magic encoding comment was found in the file.

Requirements

• Python 2.7, 3.4
• flake8

License

Apache License 2.0