python 3.9 compatibility

matrix_pygmalion_bot/core.py

@@ -362,9 +362,16 @@ async def main() -> None:
         bots.append(bot)
         await bot.login()
     print("gather")
-    async with asyncio.TaskGroup() as tg:
+    if sys.version_info[0] == 3 and sys.version_info[1] < 11:
+        tasks = []
         for bot in bots:
-            task = tg.create_task(bot.client.sync_forever(timeout=30000, full_state=True))
+            task = asyncio.create_task(bot.client.sync_forever(timeout=30000, full_state=True))
+            tasks.append(task)
+        await asyncio.gather(*tasks)
+    else:
+        async with asyncio.TaskGroup() as tg:
+            for bot in bots:
+                task = tg.create_task(bot.client.sync_forever(timeout=30000, full_state=True))
 
 if __name__ == "__main__":
     asyncio.get_event_loop().run_until_complete(main())