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fix: default asyncio_default_fixture_loop_scope to "function" #1462

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fix: default asyncio_default_fixture_loop_scope to "function" #1462

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2c9b7cd
fix: default asyncio_default_fixture_loop_scope to "function"
sridhar-3009 May 30, 2026
d54e5ca
style: apply shed formatting after deprecation removal
sridhar-3009 May 30, 2026
9733864
changelog: add news fragment for #924
sridhar-3009 May 30, 2026
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3 changes: 3 additions & 0 deletions changelog.d/924.changed.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1,3 @@
``asyncio_default_fixture_loop_scope`` now defaults to ``"function"`` instead of being unset.
Previously, leaving the option unset caused a ``PytestDeprecationWarning`` on every test run.
The old deprecation warning and its associated constant have been removed.
15 changes: 1 addition & 14 deletions pytest_asyncio/plugin.py
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Expand Up @@ -137,7 +137,7 @@ def pytest_addoption(parser: Parser, pluginmanager: PytestPluginManager) -> None
"asyncio_default_fixture_loop_scope",
type="string",
help="default scope of the asyncio event loop used to execute async fixtures",
default=None,
default="function",
)
parser.addini(
"asyncio_default_test_loop_scope",
Expand Down Expand Up @@ -271,16 +271,6 @@ def _collect_hook_loop_factories(
return factories


_DEFAULT_FIXTURE_LOOP_SCOPE_UNSET = """\
The configuration option "asyncio_default_fixture_loop_scope" is unset.
The event loop scope for asynchronous fixtures will default to the "fixture" caching \
scope. Future versions of pytest-asyncio will default the loop scope for asynchronous \
fixtures to "function" scope. Set the default fixture loop scope explicitly in order \
to avoid unexpected behavior in the future. Valid fixture loop scopes are: \
"function", "class", "module", "package", "session"
"""


def _validate_scope(scope: str | None, option_name: str) -> None:
if scope is None:
return
Expand All @@ -295,9 +285,6 @@ def _validate_scope(scope: str | None, option_name: str) -> None:
def pytest_configure(config: Config) -> None:
default_fixture_loop_scope = config.getini("asyncio_default_fixture_loop_scope")
_validate_scope(default_fixture_loop_scope, "asyncio_default_fixture_loop_scope")
if not default_fixture_loop_scope:
warnings.warn(PytestDeprecationWarning(_DEFAULT_FIXTURE_LOOP_SCOPE_UNSET))

default_test_loop_scope = config.getini("asyncio_default_test_loop_scope")
_validate_scope(default_test_loop_scope, "asyncio_default_test_loop_scope")
config.addinivalue_line(
Expand Down
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