actually fix it this time

example/client.py

@@ -1,21 +1,18 @@
 import asyncio
-import sys
+from concurrent.futures import ThreadPoolExecutor
 
 from example.events import Message
 from socketapp import Client
 
-if sys.version_info < (3, 9, 0):
-    from concurrent.futures import ThreadPoolExecutor
-
 
 async def send(client: Client) -> None:
     await client.wait_until_ready()
     while True:
-        if sys.version_info < (3, 9, 0):
-            with ThreadPoolExecutor(1, "AsyncInput") as executor:
-                inp = await asyncio.get_event_loop().run_in_executor(executor, input)
-        else:
-            inp = await asyncio.to_thread(input)
+        with ThreadPoolExecutor(1, "AsyncInput") as executor:
+            inp = await asyncio.get_event_loop().run_in_executor(executor, input)
+
+        # in python 3.9+, you can do this instead:
+        # inp = await asyncio.to_thread(input)
 
         await client.send(Message(data=inp), client.clients)