lambdahttp.py

import http.server

def bar(props):
    return ["bar", {}, str(props)]

x = ["div", {},
        ["sp", {"onClick": "foobar()"}, ["code", {}, "foo"]],
        [bar, 44, 666, 77],
        ["p", {}, "Olá mundo!"]]

def parseMeta(x):
    s = ""
    for i in x:
        s = s + " " + i + "=\"" + x[i] + "\""
    return s

def parse(x):
    if type(x) == type([]):
        fn, *args = x
        if type(fn) == type(""):
            tag, props, *body = x
            metaStr = parseMeta(props)
            bodyStr = ""
            for i in body:
                bodyStr = bodyStr + parse(i)
            return "".join(["<", tag, metaStr, ">", bodyStr, "</", tag, ">"])
        return parse(fn(args))
    return str(x)

def handler(servlet_request, client_address, servlet):
    f = servlet_request.makefile("wb")
    f.write(b"HTTP/1.1 200 OK\r\n")
    f.write(b"Content-Type: text/html\r\n")
    f.write(b"\r\n")
    f.write(parse(x).encode())


addr = ("", 8000)
srv = http.server.HTTPServer(addr, handler)
srv.serve_forever()