Set WindowsProactorEventLoopPolicy after importing sk_function in python3.9+

Author: shenchucheng

metagpt/_compat.py

@@ -2,19 +2,22 @@
 import sys
 import warnings
 
-if sys.implementation.name == "cpython" and platform.system() == "Windows" and sys.version_info[:2] == (3, 9):
+if sys.implementation.name == "cpython" and platform.system() == "Windows":
     import asyncio
-    from asyncio.proactor_events import _ProactorBasePipeTransport
 
-    from semantic_kernel.orchestration import sk_function as _  # noqa: F401
+    if sys.version_info[:2] == (3, 9):
+        from asyncio.proactor_events import _ProactorBasePipeTransport
 
-    # https://github.com/python/cpython/pull/92842
-    def pacth_del(self, _warn=warnings.warn):
-        if self._sock is not None:
-            _warn(f"unclosed transport {self!r}", ResourceWarning, source=self)
-            self._sock.close()
+        # https://github.com/python/cpython/pull/92842
+        def pacth_del(self, _warn=warnings.warn):
+            if self._sock is not None:
+                _warn(f"unclosed transport {self!r}", ResourceWarning, source=self)
+                self._sock.close()
 
-    _ProactorBasePipeTransport.__del__ = pacth_del
+        _ProactorBasePipeTransport.__del__ = pacth_del
 
-    # caused by https://github.com/microsoft/semantic-kernel/pull/1416
-    asyncio.set_event_loop_policy(asyncio.WindowsProactorEventLoopPolicy())
+    if sys.version_info >= (3, 9, 0):
+        from semantic_kernel.orchestration import sk_function as _  # noqa: F401
+
+        # caused by https://github.com/microsoft/semantic-kernel/pull/1416
+        asyncio.set_event_loop_policy(asyncio.WindowsProactorEventLoopPolicy())