Fixes for Python 3.14 (#638)

---------

Co-authored-by: Fantix King <fantix.king@gmail.com>
Co-authored-by: Miro Hrončok <miro@hroncok.cz>
Co-authored-by: Paulo Cheque <paulocheque@gmail.com>

Author: 4 people

.github/workflows/release.yml

@@ -83,6 +83,7 @@ jobs:
         - "cp311-*"
         - "cp312-*"
         - "cp313-*"
+        - "cp314-*"
         cibw_arch: ["x86_64", "aarch64", "universal2"]
         exclude:
           - os: ubuntu-latest

.github/workflows/tests.yml

@@ -22,6 +22,7 @@ jobs:
         - "3.11"
         - "3.12"
         - "3.13"
+        - "3.14"
         os: [ubuntu-latest, macos-latest]
 
     env:

pyproject.toml

@@ -2,7 +2,7 @@
 name = "uvloop"
 description = "Fast implementation of asyncio event loop on top of libuv"
 authors = [{name = "Yury Selivanov", email = "yury@magic.io"}]
-requires-python = '>=3.8.0'
+requires-python = '>=3.8.1'
 readme = "README.rst"
 license = {text = "MIT License"}
 dynamic = ["version"]
@@ -38,9 +38,9 @@ test = [
     # their combination breaks too often
     # (example breakage: https://gitlab.com/pycqa/flake8/issues/427)
     'aiohttp>=3.10.5',
-    'flake8~=5.0',
+    'flake8~=6.1',
     'psutil',
-    'pycodestyle~=2.9.0',
+    'pycodestyle~=2.11.0',
     'pyOpenSSL~=23.0.0',
     'mypy>=0.800',
 ]

uvloop/__init__.py

@@ -3,20 +3,19 @@
 import sys as _sys
 import warnings as _warnings
 
-from asyncio.events import BaseDefaultEventLoopPolicy as __BasePolicy
-
 from . import includes as __includes  # NOQA
 from .loop import Loop as __BaseLoop  # NOQA
 from ._version import __version__  # NOQA
 
 
-__all__ = ('new_event_loop', 'install', 'EventLoopPolicy')
+__all__: _typing.Tuple[str, ...] = ('new_event_loop', 'run')
+_AbstractEventLoop = __asyncio.AbstractEventLoop
 
 
 _T = _typing.TypeVar("_T")
 
 
-class Loop(__BaseLoop, __asyncio.AbstractEventLoop):  # type: ignore[misc]
+class Loop(__BaseLoop, _AbstractEventLoop):  # type: ignore[misc]
     pass
 
 
@@ -25,18 +24,6 @@ def new_event_loop() -> Loop:
     return Loop()
 
 
-def install() -> None:
-    """A helper function to install uvloop policy."""
-    if _sys.version_info[:2] >= (3, 12):
-        _warnings.warn(
-            'uvloop.install() is deprecated in favor of uvloop.run() '
-            'starting with Python 3.12.',
-            DeprecationWarning,
-            stacklevel=1,
-        )
-    __asyncio.set_event_loop_policy(EventLoopPolicy())
-
-
 if _typing.TYPE_CHECKING:
     def run(
         main: _typing.Coroutine[_typing.Any, _typing.Any, _T],
@@ -114,7 +101,7 @@ async def wrapper():
             )
 
 
-def _cancel_all_tasks(loop: __asyncio.AbstractEventLoop) -> None:
+def _cancel_all_tasks(loop: _AbstractEventLoop) -> None:
     # Copied from python/cpython
 
     to_cancel = __asyncio.all_tasks(loop)
@@ -139,30 +126,108 @@ def _cancel_all_tasks(loop: __asyncio.AbstractEventLoop) -> None:
             })
 
 
-class EventLoopPolicy(__BasePolicy):
-    """Event loop policy.
+_deprecated_names = ('install', 'EventLoopPolicy')
+
+
+if _sys.version_info[:2] < (3, 16):
+    __all__ += _deprecated_names
+
+
+def __getattr__(name: str) -> _typing.Any:
+    if name not in _deprecated_names:
+        raise AttributeError(f"module 'uvloop' has no attribute '{name}'")
+    elif _sys.version_info[:2] >= (3, 16):
+        raise AttributeError(
+            f"module 'uvloop' has no attribute '{name}' "
+            f"(it was removed in Python 3.16, use uvloop.run() instead)"
+        )
+
+    import threading
+
+    def install() -> None:
+        """A helper function to install uvloop policy.
+
+        This function is deprecated and will be removed in Python 3.16.
+        Use `uvloop.run()` instead.
+        """
+        if _sys.version_info[:2] >= (3, 12):
+            _warnings.warn(
+                'uvloop.install() is deprecated in favor of uvloop.run() '
+                'starting with Python 3.12.',
+                DeprecationWarning,
+                stacklevel=1,
+            )
+        __asyncio.set_event_loop_policy(EventLoopPolicy())
+
+    class EventLoopPolicy(
+        # This is to avoid a mypy error about AbstractEventLoopPolicy
+        getattr(__asyncio, 'AbstractEventLoopPolicy')  # type: ignore[misc]
+    ):
+        """Event loop policy for uvloop.
+
+        This class is deprecated and will be removed in Python 3.16.
+        Use `uvloop.run()` instead.
+
+        >>> import asyncio
+        >>> import uvloop
+        >>> asyncio.set_event_loop_policy(uvloop.EventLoopPolicy())
+        >>> asyncio.get_event_loop()
+        <uvloop.Loop running=False closed=False debug=False>
+        """
+
+        def _loop_factory(self) -> Loop:
+            return new_event_loop()
+
+        if _typing.TYPE_CHECKING:
+            # EventLoopPolicy doesn't implement these, but since they are
+            # marked as abstract in typeshed, we have to put them in so mypy
+            # thinks the base methods are overridden. This is the same approach
+            # taken for the Windows event loop policy classes in typeshed.
+            def get_child_watcher(self) -> _typing.NoReturn:
+                ...
+
+            def set_child_watcher(
+                self, watcher: _typing.Any
+            ) -> _typing.NoReturn:
+                ...
+
+        class _Local(threading.local):
+            _loop: _typing.Optional[_AbstractEventLoop] = None
+
+        def __init__(self) -> None:
+            self._local = self._Local()
+
+        def get_event_loop(self) -> _AbstractEventLoop:
+            """Get the event loop for the current context.
+
+            Returns an instance of EventLoop or raises an exception.
+            """
+            if self._local._loop is None:
+                raise RuntimeError(
+                    'There is no current event loop in thread %r.'
+                    % threading.current_thread().name
+                )
 
-    The preferred way to make your application use uvloop:
+            return self._local._loop
 
-    >>> import asyncio
-    >>> import uvloop
-    >>> asyncio.set_event_loop_policy(uvloop.EventLoopPolicy())
-    >>> asyncio.get_event_loop()
-    <uvloop.Loop running=False closed=False debug=False>
-    """
+        def set_event_loop(
+            self, loop: _typing.Optional[_AbstractEventLoop]
+        ) -> None:
+            """Set the event loop."""
+            if loop is not None and not isinstance(loop, _AbstractEventLoop):
+                raise TypeError(
+                    f"loop must be an instance of AbstractEventLoop or None, "
+                    f"not '{type(loop).__name__}'"
+                )
+            self._local._loop = loop
 
-    def _loop_factory(self) -> Loop:
-        return new_event_loop()
+        def new_event_loop(self) -> Loop:
+            """Create a new event loop.
 
-    if _typing.TYPE_CHECKING:
-        # EventLoopPolicy doesn't implement these, but since they are marked
-        # as abstract in typeshed, we have to put them in so mypy thinks
-        # the base methods are overridden. This is the same approach taken
-        # for the Windows event loop policy classes in typeshed.
-        def get_child_watcher(self) -> _typing.NoReturn:
-            ...
+            You must call set_event_loop() to make this the current event loop.
+            """
+            return self._loop_factory()
 
-        def set_child_watcher(
-            self, watcher: _typing.Any
-        ) -> _typing.NoReturn:
-            ...
+    globals()['install'] = install
+    globals()['EventLoopPolicy'] = EventLoopPolicy
+    return globals()[name]

uvloop/includes/stdlib.pxi

@@ -44,7 +44,7 @@ cdef aio_isfuture = getattr(asyncio, 'isfuture', None)
 cdef aio_get_running_loop = getattr(asyncio, '_get_running_loop', None)
 cdef aio_set_running_loop = getattr(asyncio, '_set_running_loop', None)
 cdef aio_debug_wrapper = getattr(asyncio.coroutines, 'debug_wrapper', None)
-cdef aio_AbstractChildWatcher = asyncio.AbstractChildWatcher
+cdef aio_AbstractChildWatcher = getattr(asyncio, "AbstractChildWatcher", ())
 cdef aio_Transport = asyncio.Transport
 cdef aio_FlowControlMixin = asyncio.transports._FlowControlMixin