Letting the clowns run the flying circus, at least part-time, is integral to the history of Python’s success. (Idle told The Times that the material survives because “it was written by its actors and acted by its writers.”) It is also a smart move for a show that could otherwise feel calcified; a production I saw at the Stratford Festival over the summer seemed more like an animatronic museum exhibit, making me doubt it was really revivable. And even this mostly excellent production betrays a faint odor of mothballs, especially in the projection-heavy scenic design of Paul Tate dePoo III, so dependent on the feel of Terry Gilliam’s original animations. The key to the comedy is not after all replication but individuation. The Pythons were each their own kind of oddball, and the bits are only funny with fresh bite.