Changed code to support older Python versions

venv/lib/python3.11/site-packages/uvicorn/loops/asyncio.py

@@ -0,0 +1,11 @@
+from __future__ import annotations
+
+import asyncio
+import sys
+from collections.abc import Callable
+
+
+def asyncio_loop_factory(use_subprocess: bool = False) -> Callable[[], asyncio.AbstractEventLoop]:
+    if sys.platform == "win32" and not use_subprocess:
+        return asyncio.ProactorEventLoop
+    return asyncio.SelectorEventLoop

venv/lib/python3.11/site-packages/uvicorn/loops/auto.py

@@ -0,0 +1,17 @@
+from __future__ import annotations
+
+import asyncio
+from collections.abc import Callable
+
+
+def auto_loop_factory(use_subprocess: bool = False) -> Callable[[], asyncio.AbstractEventLoop]:
+    try:
+        import uvloop  # noqa
+    except ImportError:  # pragma: no cover
+        from uvicorn.loops.asyncio import asyncio_loop_factory as loop_factory
+
+        return loop_factory(use_subprocess=use_subprocess)
+    else:  # pragma: no cover
+        from uvicorn.loops.uvloop import uvloop_loop_factory
+
+        return uvloop_loop_factory(use_subprocess=use_subprocess)

venv/lib/python3.11/site-packages/uvicorn/loops/uvloop.py

@@ -0,0 +1,10 @@
+from __future__ import annotations
+
+import asyncio
+from collections.abc import Callable
+
+import uvloop
+
+
+def uvloop_loop_factory(use_subprocess: bool = False) -> Callable[[], asyncio.AbstractEventLoop]:
+    return uvloop.new_event_loop