Hy is a Lisp dialect that's embedded in Python.
Further reading:
Questions tagged [hy]
99 questions
0
votes
1 answer
configure automatic Hy REPL imports
I've been absolutely loving the Hy REPL. However it would speed up my workflow immensely if I could have a set of default imports at startup. Clojure has a way of configuring startup imports via leiningen config. Currently I load the repl this…
dedupe
- 9
- 2
0
votes
1 answer
How to construct AST of Hy lang snippets
I have several Hy Lang code snippets that I use in my python project.
I was wondering if there is a relatively easy way for me to get an Abstract Syntax Tree of the Hy code with some python library or maybe even the Hy compiler itself (I've looked…
Kenny
- 33
- 4
0
votes
1 answer
how to use hy to when operating on pandas dataframe columns
There seems to be no documentation on how to use hy on single column pandas operation such as the following. Would appreciate any help:
# simple instantiation to scalar
df['a'] = '2'
# the above can be done like so: (-> df (.assign :a "2")) but…
dedupe
- 9
- 2
0
votes
2 answers
Does Hy code require indenting, just like Python?
I am unable to submit multiple lines of Hy to Python without indentation:
import hy
expr=hy.read_str("(+ 1 1)(+ 2 2)")
hy.eval(expr)
=> 2
The second '(+ 2 2)' statement has apparently been ignored.
Obviously Python's raison d'etre is indentation,…
berniethejet
- 236
- 2
- 11
0
votes
1 answer
How do I setup a hy project so that I can use pytest for testing
I'm trying to test a hy project with pytest but am having trouble with pytest discovering my tests. What needs to be done so that pytest can pick up tests written in hy? I've made the assumption that tests can be written in hy and discovered by…
GHvW
- 17
- 2
- 7
0
votes
1 answer
RecursionError in Python Using Hylang
First off let me just say I know what I'm doing is not ideal, but I'm trying to write the member? function from The Little Schemer using Hy.
(setv else True)
(defn null? [lst]
" If list is empty return True else False "
(if lst
False
…
decabytes
- 386
- 2
- 14
0
votes
2 answers
Is there a way to capture a name from the environment when using hy.eval?
I'm trying to create functions in hylang and use them from python but the created functions don't seem to have access to the environment passed to hy.eval.
import hy
env = dict(x=5)
func = hy.eval(hy.read_str('(fn [] x)'), env)
print(func())
The…
Kris
- 1,358
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0
votes
1 answer
`self` can not use as arguments of a hy macro
The following macro tries to assign a member variable from init argument.
But
name 'self' is not defined
(defmacro optional_assign [x &optional [base self]]
`(lif ~x (setv (. ~base ~x) ~x) (setv (. ~base ~x ) None) ))
(defclass clsa []
…
niitsuma
- 117
- 1
- 4
0
votes
1 answer
Importing .hy file with function definition in .py file and after calling function from .hy from python
My .py file looks like:
import hy
import example
foo2()
My .hy file looks like:
(defn foo2 [] (+ 1 1))
.hy file is in same folder as .py file.
If I run .py file I am getting error:
runfile('D:/del/hy2/untitled46.py', wdir='D:/del/hy2')
Reloaded…
vasili111
- 6,032
- 10
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- 80
0
votes
1 answer
HyLang import_buffer_to_ast removed version 0.18.0
I am updating from Hy 0.12.1 to the newest version 0.18.0, and I make heavy use of the import_buffer_to_ast function in my python code.
This function has been removed from hy.importer, I was hoping someone could lead me to a good alternative.
JoCee
- 50
- 4
0
votes
2 answers
Auto insert await when asyncio function in hy-lang
The following do/a macro can auto-insert await when asyncio function is used.
The following also shows usage.
(import asyncio)
(import time)
(defmacro do/a [&rest code]
`(do ~@(lfor p code
(if
(= (cut (str…
niitsuma
- 117
- 1
- 4
0
votes
1 answer
How can I create a Python standalone executable using Hy modules?
Given an entry file main.py like so:
#-*- coding: utf-8 -*-
# -*- mode: python -*-
import hy
import os.path
import hymodule
datas=[(os.path.dirname(hy.__file__), 'hy')]
hymodule.hello_world()
Given a Hy file hymodule.hy:
(defn hello-world []
…
Phob1a
- 743
- 1
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0
votes
0 answers
Why is my version of Hy unknown and deftag undefined?
Why hy unknown?
How to use deftag?
Snippet from http://docs.hylang.org/en/stable/language/api.html#deftag
gt@gt-ThinkPad-X230:~$ hy --spy
hy unknown using CPython(default) 3.6.8 on Linux
=> (deftag ♣ [expr] `[~expr ~expr])
from hy…
dagmarPrime
- 317
- 3
- 9
0
votes
2 answers
Example of using hylang with python multiprocessing
I am looking for an example of using python multiprocessing (i.e. a process-pool/threadpool, job queue etc.) with hylang.
ggg123
- 99
- 10
0
votes
1 answer
How to load Hy package in zipapp?
I have a Python script (as entry point), a Hy library (simply add two columns) and an input data file:
$ cat add_cols/app.py
import hy
import sys
from mylib import add2col
def main():
inp = sys.argv[1]
out = sys.argv[2]
print(f'read…
Leo
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