How to use Python like Lisp

Lisp has some very effective way to get jobs done, this article give you a direct way to use Python like Lisp.

cons = lambda el, lst: (el, lst) 

mklist = lambda *args: reduce(lambda lst, el: cons(el, lst), reversed(args), None) 

car = lambda lst: lst[0] if lst else lst 

cdr = lambda lst: lst[1] if lst else lst 

nth = lambda n, lst: nth(n-1, cdr(lst)) if n ]]> 0 else car(lst) 

length = lambda lst, count=0: length(cdr(lst), count+1) if lst else count

begin = lambda *args: args[-1] 

display = lambda lst: begin(w("%s " % car(lst)), display(cdr(lst))) if lst else w("niln")

where w = sys.stdout.write

foldr = lambda f, i: lambda s: reduce(f, s, i)

foldl = reduce

mapcar = map

Pay attention about the speed when you use Python, here is a benchmarks for 5 languages: