Test ordered one-slot DFlash2 placements and preserve results

experiments/dflash2-medium-20260920/check_reviewed_code.py

@@ -0,0 +1,20 @@
+import ast,asyncio,json,pathlib,re,typing,gzip
+p=pathlib.Path(__file__).resolve().parent/'results/medium-slot1-priority2-draft-cuda1/result.json.gz'
+d=json.loads(gzip.decompress(p.read_bytes()));content=d['decode'][1]['choices'][0]['message']['content']
+source=re.search(r'```python\s*\n(.*?)```',content,re.S).group(1)
+# Reviewed above: only asyncio task orchestration and exception handling, no I/O.
+node=next(n for n in ast.parse(source).body if isinstance(n,ast.AsyncFunctionDef) and n.name=='first_success')
+scope={'asyncio':asyncio,'Any':typing.Any,'List':typing.List,'Awaitable':typing.Awaitable}
+exec(compile(ast.Module(body=[node],type_ignores=[]),'<reviewed-dflash-answer>','exec'),scope)
+async def check(all_fail):
+ async def task(delay,fail):
+  await asyncio.sleep(delay)
+  if fail:raise ValueError('synthetic failure')
+  return 7
+ try:
+  r=await asyncio.wait_for(scope['first_success']([task(.001,True),task(.005,all_fail)]),timeout=1)
+  return {'returned':r,'pass':not all_fail and r==7}
+ except Exception as e:
+  return {'error':type(e).__name__+': '+str(e),'pass':all_fail and type(e).__name__=='ExceptionGroup'}
+out={'scope':'Two checks of manually reviewed decode answer, not broad quality evaluation','fast_failure_then_success':asyncio.run(check(False)),'all_fail':asyncio.run(check(True))}
+print(json.dumps(out,indent=2))