launch_browser.py

from cefpython3 import cefpython as cef
import sys


def send_to_python(json_string):
    # json string will be accessible as the 'out' value in the subprocess return
    print(json_string)
    return


def main():
    sys.excepthook = cef.ExceptHook
    _script, port, endpoint = sys.argv
    cef.Initialize()
    browser = cef.CreateBrowserSync(settings=dict(universal_access_from_file_urls_allowed=True,
                                        javascript_disabled=False,
                                        javascript_close_windows_disallowed=False,
                                        webgl_disabled=False,
                                        plugins_disabled=False,
                                        local_storage_disabled=False,
                                        web_security_disabled=True),
                                    url="http://localhost:{PORT}/#/{ENDPOINT}".format(PORT=port, ENDPOINT=endpoint),
                                    window_title="Warehouse")

    bindings = cef.JavascriptBindings(bindToFrames=True, bindToPopups=True)
    bindings.SetFunction("sendToPython", send_to_python)
    browser.SetJavascriptBindings(bindings)

    cef.MessageLoop()
    cef.Shutdown()

if __name__ == '__main__':
    main()