Javascript function arguments extraction with PyV8

js_arg_extract_w_pyv8.js

import PyV8


class Globals(PyV8.JSClass):
    def __init__(self):
        super(Globals, self).__init__()
        self.coords = []

    def PutMarkers(self, selector, coords):
        coords = PyV8.convert(coords)

        for coord in coords['data']:
            self.coords.append({
                'lat': float(coord['lat']),
                'lng': float(coord['lng']),
                'id': int(coord['id'])
            })

    def ready(self, function):
        function()

    def __call__(self, *args, **kwargs):
        return self

    def __getattr__(self, *args):
        return self

script_content = """
$(document).ready(function(){
    new AwesomeLibrary.PutMarkers('#map', {
        data: [{id: '1', lat: '47.160971', lng: '16.4878386'}]
    });
});"""

context_globals = Globals()
with PyV8.JSContext(context_globals) as ctx:
    ctx.eval(script_content)

print(context_globals.coords)

This is a Python 3 project. See the related blog post (hungarian):
http://slpython.blogspot.hu/2015/02/javascript-fuggveny-parameterenek.html