Reset asyncio event loop before script execution

Adds logic to reset or replace the asyncio event loop between runs to prevent issues caused by reusing a running loop from a previous app session. This helps avoid blocking new script executions due to an already running event loop.

Author: FeodorFitsner

src/serious_python_android/lib/src/cpython.dart

@@ -112,6 +112,22 @@ if threading.current_thread() is not threading.main_thread():
     _signalPatched = true;
   }
 
+  // Reset/replace asyncio loop between runs to avoid reusing a running loop from
+  // a previous app session that could block new runs.
+  const loopReset = """
+import asyncio
+try:
+    loop = asyncio.get_event_loop()
+    if loop.is_running():
+        loop.stop()
+        loop.close()
+    asyncio.set_event_loop(asyncio.new_event_loop())
+except Exception as e:
+    pass
+""";
+  _pyLog("resetting asyncio loop");
+  cpython.PyRun_SimpleString(loopReset.toNativeUtf8().cast());
+
   try {
     if (script != "") {
       // run script