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A dialect of Lisp that's embedded in Python

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XKCD #224

Lisp and Python should love each other. Let's make it happen.

Hy is a Lisp dialect that's embedded in Python. Since Hy transforms its Lisp code into Python abstract syntax tree (AST) objects, you have the whole beautiful world of Python at your fingertips, in Lisp form.

To install the latest alpha of Hy, just use the command

pip3 install --pre
--user hy
. Then you can start an interactive read-eval-print loop (REPL) with the command
, or run a Hy program with
hy myprogram.hy


  • Code:
  • Documentation:
    • master, for use with the latest revision on GitHub:
    • alpha, for use with the latest alpha release:
    • stable, for use with version 0.20.0:
  • Bug reports: We have no bugs! Your bugs are your own! (
  • License: MIT (Expat)
  • Hacking on Hy
  • Community: Join us on Github Discussions!
  • Stack Overflow: The [hy] tag

Cuddles the Hacker

(fan art from the one and only doctormo)

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