.. _yield-inside-async-function:

yield-inside-async-function / E1700
===================================

**Message emitted:**

Yield inside async function

**Description:**

*Used when an `yield` or `yield from` statement is found inside an async function.*


**Correct code:**

.. code-block:: python

  async def foo():
      def _inner_foo():
          yield from [1, 2, 3]
  
  
  async def foo():
      yield 42


**Problematic code:**

.. code-block:: python

  async def foo():
      yield from [1, 2, 3]  # [yield-inside-async-function]


**Additional details:**

The message can't be emitted when using Python < 3.5.


**Related links:**

- `PEP 525 <https://peps.python.org/pep-0525/>`_


Created by ``async`` checker