How to use the svgpathtools.misctools.open_in_browser function in svgpathtools

return dwg
      
    # save svg
    if not os_path.exists(os_path.dirname(filename)):
        makedirs(os_path.dirname(filename))
    dwg.save()

    # re-open the svg, make the xml pretty, and save it again
    xmlstring = md_xml_parse(filename).toprettyxml()
    with open(filename, 'w') as f:
        f.write(xmlstring)

    # try to open in web browser
    if openinbrowser:
        try:
            open_in_browser(filename)
        except:
            print("Failed to open output SVG in browser.  SVG saved to:")
            print(filename)

def display(self, filename=None):
        """Displays/opens the doc using the OS's default application."""

        if filename is None:
            filename = self.original_filename

        # write to a (by default temporary) file
        with open(filename, 'w') as output_svg:
            output_svg.write(etree.tostring(self.tree.getroot()))

        open_in_browser(filename)