yield-outside-function (F704)

Derived from the Pyflakes linter.

What it does

Checks for yield, yield from, and await usages outside of functions.

The use of yield, yield from, or await outside of a function will raise a SyntaxError.

class Foo:
    yield 1

As an exception, await is allowed at the top level of a Jupyter notebook (see: autoawait).