uhh. __builtins__ is a module in __main__ and a dict elsewhere

benjaminp · benjaminp · commit f63e343c3990 · 2008-07-29T15:53:12.000Z
diff --git a/Lib/doctest.py b/Lib/doctest.py
@@ -1360,7 +1360,10 @@ def run(self, test, compileflags=None, out=None, clear_globs=True):
             linecache.getlines = self.save_linecache_getlines
             if clear_globs:
                 test.globs.clear()
-                __builtins__['_'] = None
+                if __name__ == "__main__":
+                    __builtins__._ = None
+                else:
+                    __builtins__['_'] = None
 
     #/////////////////////////////////////////////////////////////////
     # Summarization
