If you are us­ing Google's sitemap_­gen to gen­er­ate a sitemap for your site... don't.

1. It's aban­­doned

2. It's python 2.x on­­ly

3. The code is ghast­­ly

4. The out­­put it pro­­duces is triv­ial

For ex­am­ple, I just re­placed it with ~30 lines of nicer code. and prob­a­bly so can you.