Python Forum
Web scraping (selenium (i think)) - Printable Version

+- Python Forum (https://python-forum.io)
+-- Forum: Python Coding (https://python-forum.io/forum-7.html)
+--- Forum: Web Scraping & Web Development (https://python-forum.io/forum-13.html)
+--- Thread: Web scraping (selenium (i think)) (/thread-15647.html)

Pages: 1 2

Web scraping (selenium (i think)) - Larz60+ - Jan-25-2019

When scraping a new site, I like to download each page so that I can work on it offline until I perfect the code.

If I save for example browser.page_source, I get the page and all of the links, etc. which is helpful.
But what I'd really like to have is what is stored when from firefox, you use the 'Save Page As' from file menu,
which not only saves the page, but all of the supporting images, css files, javascript, etc. in a separate directory.

I could write code to do this, but not sure exactly what I need to download to be 'not too little', or 'not too much'

With selenium, when the page is brought up using:
caps = webdriver.DesiredCapabilities().FIREFOX
            caps["marionette"] = True
browser.get(url)
the firefox menu is not shown, so clicking on 'Save Page As' is not an option.

the question: Does anyone know how to do this?
If not, does anyone know exactly what to download to be 'just enough'?

I found a package 'pywebcopy' which does a great job of downloading a page, and it's peripheral files,
but all of the links are missing in the html.

RE: Web scraping (selenium (i think)) - metulburr - Jan-25-2019

can you do save page as via keyboard shortcuts?
ActionChains(browser).key_down(Keys.COMMAND).send_keys("s").key_up(Keys.COMMAND).perform()


RE: Web scraping (selenium (i think)) - Larz60+ - Jan-25-2019

I'll give it a go

RE: Web scraping (selenium (i think)) - metulburr - Jan-26-2019

Here seems to be a method (responses 2 and 3) for win and linux
https://stackoverflow.com/questions/10967408/save-a-web-page-with-python-selenium

The linux one works for me with selenium to save as in firefox with a few modifications
sudo apt-get install xautomation
from subprocess import Popen, PIPE

save_sequence = b"""keydown Control_L
key S
keyup Control_L
keydown Return
"""


def keypress(sequence):
    p = Popen(['xte'], stdin=PIPE)
    p.communicate(input=sequence)

keypress(save_sequence)
it downloads the css, js, images in a directory

metulburr@ubuntu:~/Downloads$ cd Twitter_files/
metulburr@ubuntu:~/Downloads/Twitter_files$ ls
0.commons.en.e39ce78c2d3da.js     saved_resource(5).html
8.pages_home.en.01b37cfab9b.js  saved_resource(6).html
analytics.js                             saved_resource(7).html
default_profile_bigger.png               saved_resource(8).html
default_profile_normal.png               saved_resource(9).html
delight_prompt.png                       saved_resource.html
init.en.244fa41b6a57.js          twitter_core.bundle.css
Qtz8LqPx_bigger.jpg                      twitter_more_1.bundle.css
saved_resource(1).html                   twitter_more_2.bundle.css
saved_resource(2).html                   twitter_profile_editing.bundle.css
saved_resource(3).html                   Vb8k670S_bigger.png
saved_resource(4).html                   y-kyowAV_bigger.jpg
metulburr@ubuntu:~/Downloads/Twitter_files$


RE: Web scraping (selenium (i think)) - Larz60+ - Jan-26-2019

Thanks, Will try thin in the A.M. and let you know how I make out.
I was also thinking that I could use pywebcopy to get all of the peripheral files, and
just save browser.page_source to get main page html with the links in tact.

The method you show looks promising, Is xte a pipe or a filename?

RE: Web scraping (selenium (i think)) - metulburr - Jan-26-2019

(Jan-26-2019, 03:12 AM)Larz60+ Wrote: Is xte a pipe or a filename?
its a program
sudo apt-get install xautomation
https://linux.die.net/man/1/xte

RE: Web scraping (selenium (i think)) - Larz60+ - Jan-26-2019

trying to get your subprocess to work
when executing xte.communicate, getting following error:

Error:
Unknown command '        key S'
Unknown command '        keyup Control_L'
Unknown command '        keydown Return'
Unknown command '       '
(executing keypress)

code:
    def save_page_as(self):
        save_sequence = b"""keydown Control_L
        key S
        keyup Control_L
        keydown Return
        """
        def keypress(save_sequence):
            p = Popen(['xte'], stdin=PIPE)
            p.communicate(input=save_sequence)
        
        keypress(save_sequence)
Missing communicate?

RE: Web scraping (selenium (i think)) - metulburr - Jan-26-2019

docstrings save the space before it including the indentation for the function. Which is why the first one is not in the error. 
>>> s = '''a
...     b
... c
... '''
>>> s
'a\n    b\nc\n'


RE: Web scraping (selenium (i think)) - Larz60+ - Jan-27-2019

Ok,
Now it executes but never stops, got local denial of service,
could not kill and had to disconnect my network.

I'm not knowledgeable of the xautomation process.
Guess it's time to learn.

RE: Web scraping (selenium (i think)) - metulburr - Jan-27-2019

you might need a keyup Return to stop it?