there's likely to be Python programmers here
I have my doubts.
Anyway, the ending. The protagonist has an existential crisis and/or mental breakdown over the inherently subjective character of meaning, even with all the power of symbolic computation at his disposal. The snake taunts him and leads him on a wild goose chase through his own unraveling sanity. Finally, he comes to terms with his unsettling phenomenological questions. It appears he may have somehow merged with the snake. He looks in the mirror and declares, "I have read my SICP today."