Update nest-asyncio/README.md

nest-asyncio/README.md

@@ -1,19 +1,17 @@
 ```python
 import asyncio
-(loop := asyncio.get_event_loop()).__class__._check_running = lambda _: None
 def _run_once(loop):
     loop._process_events(loop._selector.select(0))
-    if (ready := loop._ready) and not (handle := ready.popleft())._cancelled:
+    if (ready := loop._ready) and (handle := ready.popleft())._cancelled is False:
         task = (tasks := asyncio.tasks._current_tasks).pop(loop, None)
-        handle._run()
-        tasks[loop] = task
-loop.__class__._run_once = _run_once
-asyncio.run = loop.run_until_complete
-
+        handle._run(); tasks[loop] = task
+(loop := asyncio.get_event_loop()).__class__._run_once = _run_once
+loop.__class__._check_running = lambda _: 0; asyncio.run = loop.run_until_complete
 
 async def hello():
     print('hello')
-    async def world(): print('world')
+    async def world(): 
+        print('world')
     asyncio.run(world())
 asyncio.run(hello())
 """