This reminds me of something I knocked up back in 2006. It's not a scraper, it's not Python, but here you are:
Searches multiple UK ticket sites and returns the artist page matching the query.
Clicking a header label (i.e. Ticketweb) switches to that provider.
Double-clicking the header re-searches based on the value of the search box.
I use it for the 9am scramble for newly released tickets.
Oh, it seems Ticketmaster has broken. Maybe I'll fix that one day... I haven't used it in a while.