How to save "complete webpage" not just basic html using Python

Question

Try emulating your browser with selenium. This script will pop up the save as dialog for the webpage. You will still have to figure out how to emulate pressing enter for download to start as the file dialog is out of selenium's reach (how you do it is also OS dependent).

from selenium import webdriver
from selenium.webdriver.common.action_chains import ActionChains
from selenium.webdriver.common.keys import Keys

br = webdriver.Firefox()
br.get('http://www.google.com/')

save_me = ActionChains(br).key_down(Keys.CONTROL)\
         .key_down('s').key_up(Keys.CONTROL).key_up('s')
save_me.perform()

Also I think following @Amber suggestion of grabbing the the linked resources may be a simpler, thus a better solution. Still, I think using selenium is a good starting point as br.page_source will get you the entire dom along with the dynamic content generated by javascript.

You can easily do that with simple python library pywebcopy.

For Current version: 5.0.1

from pywebcopy import save_webpage

url = 'http://some-site.com/some-page.html'
download_folder = '/path/to/downloads/'    

kwargs = {'bypass_robots': True, 'project_name': 'recognisable-name'}

save_webpage(url, download_folder, **kwargs)

You will have html, css, js all at your download_folder. Completely working like original site.

To get the script above by @rajatomar788 to run, I had to do all of the following imports first:

To run pywebcopy you will need to install the following packages:

pip install pywebcopy 
pip install pyquery
pip install w3lib
pip install parse 
pip install lxml

After that it worked with a few errors, but I did get the folder filled with the files that make up the webpage.

webpage    - INFO     - Starting save_assets Action on url: 'http://www.gatsby.ucl.ac.uk/teaching/courses/ml1-2016.html'
webpage    - Level 100 - Queueing download of <89> asset files.
Exception in thread <Element(LinkTag, file:///++resource++images/favicon2.ico)>:
Traceback (most recent call last):
  File "C:\ProgramData\Anaconda3\lib\threading.py", line 917, in _bootstrap_inner
    self.run()
  File "C:\ProgramData\Anaconda3\lib\threading.py", line 865, in run
    self._target(*self._args, **self._kwargs)
  File "C:\ProgramData\Anaconda3\lib\site-packages\pywebcopy\elements.py", line 312, in run
    super(LinkTag, self).run()
  File "C:\ProgramData\Anaconda3\lib\site-packages\pywebcopy\elements.py", line 58, in run
    self.download_file()
  File "C:\ProgramData\Anaconda3\lib\site-packages\pywebcopy\elements.py", line 107, in download_file
    req = SESSION.get(url, stream=True)
  File "C:\ProgramData\Anaconda3\lib\site-packages\pywebcopy\configs.py", line 244, in get
    return super(AccessAwareSession, self).get(url, **kwargs)
  File "C:\ProgramData\Anaconda3\lib\site-packages\requests\sessions.py", line 546, in get
    return self.request('GET', url, **kwargs)
  File "C:\ProgramData\Anaconda3\lib\site-packages\requests\sessions.py", line 533, in request
    resp = self.send(prep, **send_kwargs)
  File "C:\ProgramData\Anaconda3\lib\site-packages\requests\sessions.py", line 640, in send
    adapter = self.get_adapter(url=request.url)
  File "C:\ProgramData\Anaconda3\lib\site-packages\requests\sessions.py", line 731, in get_adapter
    raise InvalidSchema("No connection adapters were found for '%s'" % url)
requests.exceptions.InvalidSchema: No connection adapters were found for 'file:///++resource++images/favicon2.ico'

webpage    - INFO     - Starting save_html Action on url: 'http://www.gatsby.ucl.ac.uk/teaching/courses/ml1-2016.html'