[eesmith]

Van Rossum was not in grad school when he wrote Python. In "Amoeba: a distributed operating system for the 1990s" (1990) at https://ieeexplore.ieee.org/abstract/document/53354 you can read:

> Guido van Rossum is a research assistant at the Centre for Mathematics and Computer Science in Amsterdam. Since 1987 he has been with the Amoeba project, working on an RPC interface specification language, a Unix emulation facility, user interface issues, and system integration. Earlier he worked on the ABC Programming Language project. Van Rossum studied mathematics and computer science at the University of Amsterdam and received a master’s degree in 1982.