Yep, and written by Guido von Rossum, no less.
However, experience with it led to my sense that Python just doesn't scale (especially back then, without type annotations) past a certain size of program.
The Code Search team had been re-inventing its UI and changing a lot (changing its focus from external to internal), and had the inspiration to leverage what they'd done to create Critique. They sold Mountain View on it, and made history. Exciting times.