--- fractions.py.orig	2009-06-22 07:17:00.000000000 -0700
+++ fractions.py	2009-07-07 19:52:42.000000000 -0700
@@ -503,10 +503,9 @@
         if isinstance(b, float):
             return a == a.from_float(b)
         else:
-            # XXX: If b.__eq__ is implemented like this method, it may
-            # give the wrong answer after float(a) changes a's
-            # value. Better ways of doing this are welcome.
-            return float(a) == b
+            # Since a doesn't know how to compare with b, let's
+            # give b a chance to compare itself with a.
+            return NotImplemented
 
     def _subtractAndCompareToZero(a, b, op):
         """Helper function for comparison operators.