Use the dummy_thread module in Queue.py and tempfile.py.

tempfile.py already contained code to let it run without threads present;
for Queue.py this is considered a useful feature too.

Lib/Queue.py

@@ -16,7 +16,10 @@ class Queue:
 
         If maxsize is <= 0, the queue size is infinite.
         """
-        import thread
+        try:
+            import thread
+        except ImportError:
+            import dummy_thread as thread
         self._init(maxsize)
         self.mutex = thread.allocate_lock()
         self.esema = thread.allocate_lock()

Lib/tempfile.py

@@ -50,12 +50,9 @@ except (ImportError, AttributeError):
 
 try:
     import thread as _thread
-    _allocate_lock = _thread.allocate_lock
-except (ImportError, AttributeError):
-    class _allocate_lock:
-        def acquire(self):
-            pass
-        release = acquire
+except ImportError:
+    import dummy_thread as _thread
+_allocate_lock = _thread.allocate_lock
 
 _text_openflags = _os.O_RDWR | _os.O_CREAT | _os.O_EXCL
 if hasattr(_os, 'O_NOINHERIT'):