Remove has_key() references from idlelib.  IDLE still doesn't run due
to relative import issues.  Any volunteers?
diff --git a/Lib/idlelib/MultiStatusBar.py b/Lib/idlelib/MultiStatusBar.py
index 2d4c547..8ee2d03 100644
--- a/Lib/idlelib/MultiStatusBar.py
+++ b/Lib/idlelib/MultiStatusBar.py
@@ -9,7 +9,7 @@
         self.labels = {}
 
     def set_label(self, name, text='', side=LEFT):
-        if not self.labels.has_key(name):
+        if name not in self.labels:
             label = Label(self, bd=1, relief=SUNKEN, anchor=W)
             label.pack(side=side)
             self.labels[name] = label