SF patch 1631942 by Collin Winter:
(a) "except E, V" -> "except E as V"
(b) V is now limited to a simple name (local variable)
(c) V is now deleted at the end of the except block
diff --git a/Lib/distutils/util.py b/Lib/distutils/util.py
index 1bcda93..16d8bcb 100644
--- a/Lib/distutils/util.py
+++ b/Lib/distutils/util.py
@@ -229,7 +229,7 @@
try:
return re.sub(r'\$([a-zA-Z_][a-zA-Z_0-9]*)', _subst, s)
- except KeyError, var:
+ except KeyError as var:
raise ValueError, "invalid variable '$%s'" % var
# subst_vars ()