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/contextlib.py b/Lib/contextlib.py
index a807c42..731bf8f 100644
--- a/Lib/contextlib.py
+++ b/Lib/contextlib.py
@@ -28,7 +28,7 @@
try:
self.gen.throw(type, value, traceback)
raise RuntimeError("generator didn't stop after throw()")
- except StopIteration, exc:
+ except StopIteration as exc:
# Suppress the exception *unless* it's the same exception that
# was passed to throw(). This prevents a StopIteration
# raised inside the "with" statement from being suppressed