Convert a pile of obvious "yes/no" functions to return bool.
diff --git a/Tools/idle/ObjectBrowser.py b/Tools/idle/ObjectBrowser.py
index c235a75..416be5a 100644
--- a/Tools/idle/ObjectBrowser.py
+++ b/Tools/idle/ObjectBrowser.py
@@ -59,7 +59,7 @@
 
 class InstanceTreeItem(ObjectTreeItem):
     def IsExpandable(self):
-        return 1
+        return True
     def GetSubList(self):
         sublist = ObjectTreeItem.GetSubList(self)
         sublist.insert(0,
@@ -68,7 +68,7 @@
 
 class ClassTreeItem(ObjectTreeItem):
     def IsExpandable(self):
-        return 1
+        return True
     def GetSubList(self):
         sublist = ObjectTreeItem.GetSubList(self)
         if len(self.object.__bases__) == 1: