This repository contains variations of Peter Norvig's lis.py interpreter for a subset of Scheme, described in his post (How to Write a (Lisp) Interpreter (in Python)).

lis.py is published in the norvig/pytudes repository on Github. The copyright holder is Peter Norvig and the code is licensed under the MIT license.

Unless otherwise noted, I wrote the changes and additions described in the README files in each directory.

• Norvig, Peter: (How to Write a (Lisp) Interpreter (in Python))
• Norvig, Peter: (An ((Even Better) Lisp) Interpreter (in Python))
• Graham, Paul: The Roots of Lisp
• Steele, Guy Lewis, Jr.; Sussman, Gerald Jay: The Art of the Interpreter, or the Modularity Complex
• McCarthy, John: Recursive functions of symbolic expressions and their computation by machine, Part I 🔒

• Abelson, Harold; Sussman, Gerald Jay; Sussman, Julie: Structure and Interpretation of Computer Programs, Second Edition (SICP)
• Dybvig, R. Kent: The Scheme Programming Language, Fourth Edition (TSPL)
• Harvey, Brian; Wright, Matthew: Simply Scheme: Introducing Computer Science, Second Edition
• Friedman, Daniel P.; Felleisen, Matthias: The Little Schemer, Fourth Edition 🔒
• Butterick, Mathew: Beautiful Racket—an introduction to language-oriented programming using Racket
• Felleisen, Matthias; Findler, Robert Bruce; Flatt, Matthew; Krishnamurthi, Shriram: How to Design Programs, Second Edition
• Krishnamurthi, Shriram: Programming Languages: Application and Interpretation (PLAI)
• Sperber, Michael; et. al. Revised⁶ Report on the Algorithmic Language Scheme (R⁶RS)

• Racket: "the Language-Oriented Programming Language"
• GNU Guile: "GNU Ubiquitous Intelligent Language for Extensions"
• Chicken Scheme: "a practical and portable Scheme system"
• A Meta-Circular Interpreter for Scheme: example 12.7 from TSPL
• McCarthy's original Lisp converted to Common Lisp by Paul Graham (local copy, original download)

Luciano Ramalho
São Paulo, August 23, 2021