1 files changed, 2 insertions, 17 deletions
diff --git a/Lib/idlelib/StackViewer.py b/Lib/idlelib/StackViewer.py
index 732773f3332..4ef2d31699e 100644
--- a/Lib/idlelib/StackViewer.py
+++ b/Lib/idlelib/StackViewer.py
@@ -7,7 +7,7 @@ from idlelib.ObjectBrowser import ObjectTreeItem, make_objecttreeitem
 
 def StackBrowser(root, flist=None, tb=None, top=None):
     if top is None:
-        from Tkinter import Toplevel
+        from tkinter import Toplevel
         top = Toplevel(root)
     sc = ScrolledCanvas(top, bg="white", highlightthickness=0)
     sc.frame.pack(expand=1, fill="both")
@@ -106,7 +106,7 @@ class VariablesTreeItem(ObjectTreeItem):
         return len(self.object) > 0
 
     def keys(self):
-        return self.object.keys()
+        return list(self.object.keys())
 
     def GetSubList(self):
         sublist = []
@@ -120,18 +120,3 @@ class VariablesTreeItem(ObjectTreeItem):
             item = make_objecttreeitem(key + " =", value, setfunction)
             sublist.append(item)
         return sublist
-
-
-def _test():
-    try:
-        import testcode
-        reload(testcode)
-    except:
-        sys.last_type, sys.last_value, sys.last_traceback = sys.exc_info()
-    from Tkinter import Tk
-    root = Tk()
-    StackBrowser(None, top=root)
-    root.mainloop()
-
-if __name__ == "__main__":
-    _test()