(en) Mark Lutz, Learning Python : Powerful Object-Oriented Programming, O'Reilly Media, Inc., , 1216 p. (ISBN9781449379322, lire en ligne), « How Does Python Stack Up to Langage », p. 17
Richard Ouzounian, "Python still has legs", Toronto Star, 16 juillet 2006, « it was on an Air Canada flight on the way to Vancouver, when John (Cleese) turned to all of us and said `I want out.' Why? I don't know. He gets bored more easily than the rest of us. He's a difficult man, not easy to be friendly with. He's so funny because he never wanted to be liked. That gives him a certain fascinating, arrogant freedom ».
