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/_strptime.py b/Lib/_strptime.py
index 3fb5602..2d9be36 100644
--- a/Lib/_strptime.py
+++ b/Lib/_strptime.py
@@ -291,7 +291,7 @@
format_regex = time_re.compile(format)
# KeyError raised when a bad format is found; can be specified as
# \\, in which case it was a stray % but with a space after it
- except KeyError, err:
+ except KeyError as err:
bad_directive = err.args[0]
if bad_directive == "\\":
bad_directive = "%"