Add equality with arbitrary objects

ipranges.py

@@ -26,7 +26,9 @@ class Range(object):
         return self.high() - self.low() + 1
 
     def __eq__(self, other):
+        if isinstance(other, (IPRangeBase, IPNetBase, IPAddrBase)):
             return (self.low() == other.low() and self.high() == other.high())
+        return False
 
     def __ne__(self, other):
         return not self.__eq__(other)