Get all requests of a page in Python using gtk webkit2

get-request-urls.py

#!/usr/bin/python3
import os
import sys
from contextlib import contextmanager

import gi
gi.require_version('Gtk', '3.0')
gi.require_version('WebKit2', '4.0')
from gi.repository import Gtk, WebKit2

@contextmanager
def exit_on_broken_pipe(statuscode=0):
    try:
        yield
    except BrokenPipeError:
        # https://docs.python.org/3/library/signal.html#note-on-sigpipe
        devnull = os.open(os.devnull, os.O_WRONLY)
        os.dup2(devnull, sys.stdout.fileno())
        sys.exit(statuscode)
        
def on_resource(_webview, _resource, request):
    with exit_on_broken_pipe():
        uri = request.get_uri()
        print(uri, flush=True)
    return True

def load(url):
    window = Gtk.Window()
    window.set_default_size(800, 600)
    window.connect("destroy", Gtk.main_quit)

    webview = WebKit2.WebView()
    webview.connect("resource-load-started", on_resource)
    webview.load_uri(url)

    window.add(webview)
    window.show_all()

    Gtk.main()

if __name__ == "__main__":
    load(sys.argv[1])