app.py

import gradio as gr

def embed_widget_code():
    return gr.outputs.HTML('''
        <!--OST Widget code start-->
        <div style="text-align:right;">
            <div style="min-height:360px;">
                <div style="width:100%;height:0;padding-bottom:50%;position:relative;">
                    <iframe style="border:none;position:absolute;top:0;left:0;width:100%;height:100%;min-height:360px;border:none;overflow:hidden !important;" src="//openspeedtest.com/speedtest"></iframe>
                </div>
            </div>
            Provided by <a href="https://openspeedtest.com">OpenSpeedtest.com</a>
        </div>
        <!-- OST Widget code end -->
    ''')

iface = gr.Interface(embed_widget_code, inputs={}, outputs="html", 
                    examples=[], enable_queue=True, 
                    layout="unaligned", capture_session=True)

iface.launch()