missing-copyright-notice (CPY001)

Derived from the flake8-copyright linter.

This rule is unstable and in preview. The --preview flag is required for use.

What it does

Checks for the absence of copyright notices within Python files.

Note that this check only searches within the first 4096 bytes of the file.

Why is this bad?

In some codebases, it's common to have a license header at the top of every file. This rule ensures that the license header is present.