How to get HTML code from developer console?

Question

Python

I don't know how to phrase the question correctly.
When I open the HTML code, via:
import urllib.request
res = urllib.request.urlopen("site").read()
print(res)
Not all the lines that are in the Elements tab in the Google Chrome developer console are displayed.

Is there any way to get the HTML-code from Elements?

Answer 1

Enter in the browser console:
document.documentElement.outerHTML

Answer 2

Все просто, дополнительные строки наверняка дописывает javascript, так что через urllib их никак не получить.