The :ref:`configuration/asyncio_default_fixture_loop_scope` configuration option sets the default event loop scope for asynchronous fixtures. The following code snippets configure all fixtures to run in a session-scoped loop by default:
[pytest]
asyncio_default_fixture_loop_scope = session
[tool.pytest.ini_options]
asyncio_default_fixture_loop_scope = "session"
[tool:pytest]
asyncio_default_fixture_loop_scope = session
Please refer to :ref:`configuration/asyncio_default_fixture_loop_scope` for other valid scopes.