from IPython.display import Javascript
def show_port(port, height=400):
display(Javascript("""
(async ()=>{
fm = document.createElement('iframe')
fm.src = await google.colab.kernel.proxyPort(%s)
fm.width = '95%%'
fm.height = '%d'
fm.frameBorder = 0
document.body.append(fm)
})();
""" % (port, height) ))
get_ipython().system_raw('python3 -m http.server 8888 &')
show_port(8888)