asyncio: PipeHandle.fileno() now raises an exception if the pipe is closed

vstinner · vstinner · commit 2a3f38fd299c · 2015-01-26T15:03:44.000+01:00
diff --git a/Lib/asyncio/windows_utils.py b/Lib/asyncio/windows_utils.py
@@ -147,6 +147,8 @@ def handle(self):
         return self._handle
 
     def fileno(self):
+        if self._handle is None:
+            raise ValueError("I/O operatioon on closed pipe")
         return self._handle
 
     def close(self, *, CloseHandle=_winapi.CloseHandle):
