invalid-class-name (N801)

Derived from the pep8-naming linter.

What it does

Checks for class names that do not follow the CamelCase convention.

Why is this bad?

PEP 8 recommends the use of the CapWords (or CamelCase) convention for class names:

Class names should normally use the CapWords convention.

The naming convention for functions may be used instead in cases where the interface is documented and used primarily as a callable.

Note that there is a separate convention for builtin names: most builtin names are single words (or two words run together), with the CapWords convention used only for exception names and builtin constants.

Example

class my_class:
    pass

Use instead:

class MyClass:
    pass