Introduction-to-Tornado/Introduction-to-Tornado — pull request #2 by quiver (2012-03-31 15:58:23+00:00)
Title: fix regular expressions for routing

This is a sample code fix for Ch.4 Databases : Editing and Adding Books

If you run the sample code and 'X' or 'x' is included in ISBN number, the server raises an error.
Sample codes listed in the book is OK, but the code here at github has this bug.