Remove the ability to slice/index on exceptions per PEP 352.
diff --git a/Lib/traceback.py b/Lib/traceback.py
index a0d2dcc..437e29b 100644
--- a/Lib/traceback.py
+++ b/Lib/traceback.py
@@ -178,7 +178,7 @@
     # It was a syntax error; show exactly where the problem was found.
     lines = []
     try:
-        msg, (filename, lineno, offset, badline) = value
+        msg, (filename, lineno, offset, badline) = value.args
     except Exception:
         pass
     else: