yield-outside-function (F704)

Derived from the Pyflakes linter.

What it does

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

Why is this bad?

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

Example

class Foo:
    yield 1

Notebook behavior

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

References

• Python documentation: yield