Apart from the fact that it's a mistranslation as others said, it should be pointed out that the medieval comedy is just a generic term for play or story, and n

Apart from the fact that it's a mistranslation as others said, it should be pointed out that the medieval comedy is just a generic term for play or story, and not necessarily funny. The term defines the intellectual level of the language as "midrange", as opposed to the more complex tragedy or the simple elegy; and it roughly indicates a positive ending, again as opposed to tragedy. We have letters in which Dante himself explains this. Humour should not be expected, although there is some satire to be found in the Inferno (which is only one third of the Comedy).