Your browser can't (and know you how to) execute Python functions/modules.

What you want is to make an AJAX request. Basically, you need to put a web server in front of your Python function and then return the result of the function, here your XML file, when a certain URL is called.

There's a lot of lightweight web framework that should help you to setup a quick web server to do that. For instance, Flask. Here's an example, totally inspired from the homepage of Flask:

from flask import Flask

from yourmodule import function_that_return_xml

app = Flask(__name__)



@app.route(/)

def hello():

    xml = function_that_return_xml()

    # make fancy operations if you want

    return xml



if __name__ == __main__:

    app.run()

Then, here you can call http://localhost:5000 (default address, put it online if you want other users to use it) to get your XML file.