prohibited-trailing-comma (COM819)

Derived from the flake8-commas linter.

Fix is always available.

What it does

Checks for the presence of prohibited trailing commas.

Why is this bad?

Trailing commas are not essential in some cases and can therefore be viewed as unnecessary.

Example

foo = (1, 2, 3,)

Use instead:

foo = (1, 2, 3)

Formatter compatibility

We recommend against using this rule alongside the formatter. The formatter enforces consistent use of trailing commas, making the rule redundant.