SyntaxError in await-for-in structure #4907

Activity

1. DimitrisJim

   added

   A-compilerArea: compilerArea: compiler

   on Apr 25, 2023
2. jackoconnordev commented on Aug 5, 2025

   

   jackoconnordev

   on Aug 5, 2025

   Contributor

   More actions

   I might be wrong here but I think this can be closed. I've tried to reproduce the syntax error without success.

   Environment

   Chip: Apple M1
   OS: MacOS Sequoia 15.6
   RustPython: 0.4.0
   Python: 3.13.5

   Test script

   A simple script which uses asyncio runtime to call an async function which awaits the result of asyncio.sleep(1) twice inside a list comprehension. If the list comprehension succeeds, prints.

   import asyncio
   import time
   
   
   async def lc():
       [await asyncio.sleep(1) for _ in range(2)]
       print("lc done")
   
   
   start = time.time()
   
   loop = asyncio.new_event_loop()
   tasks = [
       loop.create_task(lc()),
   ]
   loop.run_until_complete(asyncio.wait(tasks))
   loop.close()
   
   end = time.time()

   RustPython output

   lc done

   CPython output

   lc done
3. youknowone commented on Oct 6, 2026

   

   youknowone

   on Oct 6, 2026

   Member

   More actions

   The originally reported problem no longer reproduces on current main. Closing per the recheck in #8982.

   — commented by Grok 4.6
4. youknowone

   closed this as completedon Oct 6, 2026