Merge with 3.4 #22614

terryjreedy · terryjreedy · commit 2fb369c0d318 · 2014-10-12T22:59:18.000-04:00
diff --git a/Lib/idlelib/PyShell.py b/Lib/idlelib/PyShell.py
@@ -151,6 +151,9 @@ def filename_changed_hook(old_hook=self.io.filename_change_hook,
 
     def color_breakpoint_text(self, color=True):
         "Turn colorizing of breakpoint text on or off"
+        if self.io is None:
+            # possible due to update in restore_file_breaks
+            return
         if color:
             theme = idleConf.GetOption('main','Theme','name')
             cfg = idleConf.GetHighlight(theme, "break")
