From 429008e86322cdb0990bec8628f19b009dbd8ff9 2014-08-13 18:02:42
From: Thomas Kluyver <takowl@gmail.com>
Date: 2014-08-13 18:02:42
Subject: [PATCH] Catch SyntaxError from tokenizing for traceback

I don't think there's an easy way to test this, but I've verified the
fix by hand.

Closes gh-6300

---

diff --git a/IPython/core/ultratb.py b/IPython/core/ultratb.py
index 8d02e8a..5fa0113 100644
--- a/IPython/core/ultratb.py
+++ b/IPython/core/ultratb.py
@@ -805,8 +805,10 @@ class VerboseTB(TBTools):
                     elif token_type == tokenize.NEWLINE:
                         break
 
-            except (IndexError, UnicodeDecodeError):
+            except (IndexError, UnicodeDecodeError, SyntaxError):
                 # signals exit of tokenizer
+                # SyntaxError can occur if the file is not actually Python
+                #  - see gh-6300
                 pass
             except tokenize.TokenError as msg:
                 _m = ("An unexpected error occurred while tokenizing input\n"