fix to autoreload for cases when module has no __name__ attribute

IPython/extensions/autoreload.py

@@ -186,7 +186,7 b' class ModuleReloader(object):'
         if not hasattr(module, '__file__') or module.__file__ is None:
             return None, None
 
-        if module.__name__ == '__main__':
+        if getattr(module, '__name__', None) == '__main__':
             # we cannot reload(__main__)
             return None, None