Committing Tim's patch for SF bug #983585:
test_repr() fails with id() values that appear negative
diff --git a/Lib/repr.py b/Lib/repr.py
index 8a86682..53b5207 100644
--- a/Lib/repr.py
+++ b/Lib/repr.py
@@ -111,8 +111,7 @@
# Bugs in x.__repr__() can cause arbitrary
# exceptions -- then make up something
except:
- return '<' + x.__class__.__name__ + ' instance at ' + \
- hex(id(x))[2:] + '>'
+ return '<%s instance at %x>' % (x.__class__.__name__, id(x))
if len(s) > self.maxstring:
i = max(0, (self.maxstring-3)//2)
j = max(0, self.maxstring-3-i)