Handle the case where interpreters.queues doesn't exist.

ericsnowcurrently · ericsnowcurrently · commit 97d02924a503 · 2024-10-08T16:01:45.000-06:00
diff --git a/Lib/concurrent/futures/interpreter.py b/Lib/concurrent/futures/interpreter.py
@@ -182,10 +182,12 @@ def run(self, task):
                 obj = _interpqueues.get(self.resultsid)
             except _interpqueues.QueueNotFoundError:
                 raise  # re-raise
-            # XXX This breaks if test.support.interpreters.queues
-            # doesn't exist.
             except _interpqueues.QueueError:
                 continue
+            except ModuleNotFoundError:
+                # interpreters.queues doesn't exist, which means
+                # QueueEmpty doesn't.  Act as though it does.
+                continue
             else:
                 break
         (res, excdata), pickled, unboundop = obj
