Welcome

"In order to be fluent you must lisp first."

An experimental implementation of clojure/lisp in python. One that gels well with python.

Install

$ sudo easy_install -U amitu.lipy

Please note that it is an experimental package so far, I will be releasing updates without any fanfare, so please use -U every so often. Don't use it for anything but demos.

What Works So Far

$ lipy -e '(print (string.upper "hello world"))'
HELLO WORLD

$ lipy -e '(print ("hello world" __len__))'
11

$ lipy -e "(print (+ 1 2 (* 23 45 2)))"
2073

$ lipy -e "(print (random.random))"
0.675215886799

$ lipy -e "(print (len (range 100)))"
100

$ lipy -e "(map print (range 2 9 2))"
2
4
6
8

$ lipy -e "(print sys.argv)"
['/usr/local/bin/lipy', '-e', '(print sys.argv)']

$ lipy -e "(eval 'print(1 + len([1, 2, 3]))')" # calling python's eval
4

$ lipy -e '(do (= name "amitu") (print "hello" name))'
hello amitu

$ lipy -e '(do (print "hello") (print "world"))'
hello
world

$ lipy -e '(if (< 1 2) (print "one less than two") (print "universe error"))'
one less than two

$ lipy -e '(print (not True))'
False

$ lipy -e '
(do
    (defmacro hello [name] (do (print "hello" (~ name)) (print "bye")))
    (hello "amitu")
    (hello (+ 1 2))
    (map hello (range 2))
)'
hello amitu
bye
hello 3
bye
hello 0
bye
hello 1
bye

$ lipy -e '
(do
    (= dofact (fn [x acc]
        (if (== x 1)
            (~ acc)
            (dofact (- x 1) (* acc x))
        )
    ))
    (print (dofact 5 1))
)'
120

Major ToDos

proper stack management, currently everything is global, big issue
modules and imports
looping?
can we do the whole thing in a non recursive fashion?
tail call optimization
python import hook to load lipy from python?

Bugs/Feature Requests/Ideas

I would love to hear from you, please send me a mail.

0 Kudos