Dialect of the Lisp programming language designed to interact with Python
Hy is adialect of theLisp programming language designed to interact withPython by translatings-expressions into Python'sabstract syntax tree (AST).[ 2] [ 3] Python Conference (PyCon) 2013 by Paul Tagliamonte.[ 4] metaprogramming ), thus Hy can be used to writedomain-specific languages .[ 5]
Similar toKawa 's andClojure 's mappings onto theJava virtual machine (JVM),[ 6] [ 7] [ 8] libraries , including thestandard library , to be imported and accessed alongside Hy code with acompiling [ note 1] [ note 2] [ 9] [ 10] [ 11]
From the language documentation:[ 12]
=> ( print "Hy!" ) Hy! => ( defn salutationsnm [ name ] ( print ( + "Hy " name "!" ))) => ( salutationsnm "YourName" ) Hy YourName! ^ The term "compiled" may apply to expressing Hy code in Python's AST or converting that AST into bytecode, the latter being dependent on the specific Python interpreter used and not Hy. ^ Hy is tested on Python 2.7, 3.4 through 3.6, andPyPy . ^ "Release 1.1.0" . 8 May 2025. Retrieved25 May 2025 .^ Jaworski, Michał; Ziadé, Tarek (2019).Expert Python programming (Third ed.). Birmingham, U.K.: Packt Publishing. p. 173.ISBN 978-1-78980-677-9 OCLC 1125343555 . ^ Danjou, Julien (2018).Serious Python: black-belt advice on deployment, scalability, testing, and more . San Francisco, CA: No Starch Press. pp. 145– 149.ISBN 9781593278793 OCLC 1057729260 . ^ Tagliamonte, Paul (2 April 2013).PyCon lightning talk Python Conference (PyCon). Santa Clara. Retrieved2 September 2014 . ^ Tagliamonte, Paul (11 April 2014).Getting Hy on Python: How to implement a Lisp front-end to Python PyCon . Montreal. Retrieved2 September 2014 . ^ Turto, Tuukka (14 February 2014)."Programming Can Be Fun with Hy" .Open Source For You . Retrieved2 September 2014 . ^ Watson, Mark (2020).A Lisp Programmer Living in Python-Land: The Hy Programming Language (PDF) . LeanBooks. ^ Edge, Jake (30 April 2014)."Getting Hy on Python" .LWN.net . Retrieved2 September 2014 . ^ "Hy Documentation" .hylang.org . Retrieved3 September 2014 .^ Danjou, Julien (26 March 2014)."The AST" .The Hacker's Guide to Python . pp. 165– 172. ^ Kitchin, John (31 March 2016)."More on Hy and why I think it is a big deal" .The Kitchin Research Group .Carnegie Mellon University . Retrieved19 September 2018 . ^ "Quickstart" .Hylang.org . 15 May 2018. Retrieved19 September 2018 .
