From: Benjamin Peterson <benjamin@python.org>
Date: Mon, 23 Mar 2009 21:25:15 +0000 (+0000)
Subject: complain when there's no last exception
X-Git-Tag: v2.7a1~1814
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=797eaf305a1e4cbaf2041e9b28b125398e2c235a;p=python

complain when there's no last exception
---

diff --git a/Lib/traceback.py b/Lib/traceback.py
index 3d877ee150..b06fcea796 100644
--- a/Lib/traceback.py
+++ b/Lib/traceback.py
@@ -241,6 +241,8 @@ def format_exc(limit=None):
 def print_last(limit=None, file=None):
     """This is a shorthand for 'print_exception(sys.last_type,
     sys.last_value, sys.last_traceback, limit, file)'."""
+    if not hasattr(sys, "last_type"):
+        raise ValueError("no last exception")
     if file is None:
         file = sys.stderr
     print_exception(sys.last_type, sys.last_value, sys.last_traceback,