Fix a lingering string exception.

diff --git a/Demo/classes/bitvec.py b/Demo/classes/bitvec.py
index 97921f24f819b85ec0cf4a19b75b46ef53c849fd..227a5363a2ba3e61ad959eab84a9372a06fae81f 100755 (executable)
--- a/Demo/classes/bitvec.py
+++ b/Demo/classes/bitvec.py
@@ -20,7 +20,7 @@ def _compute_len(param):
     mant, l = math.frexp(float(param))
     bitmask = 1 << l
     if bitmask <= param:
-        raise 'FATAL', '(param, l) = %r' % ((param, l),)
+        raise ValueError('(param, l) = %r' % ((param, l),))
     while l:
         bitmask = bitmask >> 1
         if param & bitmask: