Python = Q = quadruple bucky

quad n.

1. Two bits; syn. for quarter, crumb, tayste. 2. A four-pack of anything (compare hex, sense 2). 3. The rectangle or box glyph used in the APL language for various arcane purposes mostly related to I/O. Former Ivy-Leaguers and Oxford types are said to associate it with nostalgic memories of dear old University.

--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.