I am searching for python code to navigate through url and download the resultant file i.e. The site has multiple selections to make before i get the file to be downloaded, I want all those choosing process to be done inside a code and download the resultant file
You should definitely use Python Mechanize, which implements commands like "click link" or "fill form".
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So the issue I am having isn't that there is a link of a PDF on the web I am trying to scrape and download onto my PC (It doesn't end in .pdf). I have a download link that I want to activate, which would then lead me to download a PDF onto my computer. It looks like this:
https://***.com/files/4122109/download?download_frd=1&verifier=xxx
When I click the link, it verifies I am the user that I am, and then lets me download the file with the ID contained in the above query. The content-type for this file is "application/pdf" so I know it downloads a PDF file for me. I just need a library that "clicks" or "activates" the download for me.
Also, I am trying to do this for all the URLs I am pulling from a course on Canvas in a GET request. I am not trying to use Selenium here because I am getting these URLs from an API. Any advice in this approach would be highly appreciated.
I'm practicing in parsing web pages with python. So what I do is
ans = requests.get(link)
Then I use re to extract some information from html, that is stored in
ans.content
What I faced is that some sites use scripts, that are automatically executed in a browser, but not when I try to download a page using requests. For example, instead of getting a page with information I get something like
scripts_to_get_info.run()
in html code
Browser is installed on my computer, so as a program that I wrote, this means that, theoretically, I should have a way to run this script and to get information while running python code to parse then.
Is it possible? Any suggestion?
(idea, that this is doable, came from the fact, that when I tried to inspect page in google, I saw real html file without any trashy scripts)
I need to automate the download of a pdf recipe from a webpage that contains a list of pdfs. Every pdf could be downloaded by clicking a button, and every month the system upgrades the first item-button of the list with the last recipe.
I'm trying to understand how to create a Python's script that automates (every month) the download of the pdf by clicking the first button of the item list.
It would be perfect if I transpose the pdf into a csv file and write it into a DB MYsql.
Does anyone suggest which are the steps? Thanks!
Look into:
Using cron jobs if you need the script to run monthly
Parsing a website (as in the HTML) and taking the relevant elements that you need from it
Downloading files via HTTP using python
After some research on my problem, it seems I should use either requests or urllib or both.
So basically, I am trying to learn the code I need to download a csv file from this url:
https://globalaccess.sustainalytics.com/#/tools/0
The way I manually download my files is as follows: first, I need to log in using username and password. Next I have to go to a tab called "Screening" that takes to me another page that has several buttons called "Generate". I click a specific generate button (it's always the same one) among the option to get the excel file. After that I have the option to save the file or open from a little window within the website.
My question is what code can I use on Python to download and save the file in a particular folder?
Use Selenium
https://selenium-python.readthedocs.io/
You'll need to download a 'chromedriver' to the same directory as your python script, then use the intro tutorial on the selenium docs site to drive the browser to type/click where you want.
If you use chrome you can right click on any given link/input box click inspect, then in the window that comes up right click the bit of highlighted code and 'copy xpath'. Use the find element by xpath function in Selenium to send keys or clicks to that element.
There is a stock screening website called finviz. You can set up specific parameters for it to screen, and then there is a button in the bottom right corner that lets you export the results as a .cvs file.
I would like to create a script, in python 2.7, that will download and analyze the file. I imagine I can use urllib2 to access the website, but how can I trigger the export, and then read from that resulting file? Using the standard urllib2.urlopen(url).read(), returns an html file for the entire site, and not the export I need.
So it turns out, at least in this case, the export button is really a link to a different url. So where the screener's url might be: http://finviz.com/screener.ashx?v=111&f=sh_price_u1.
The export version of the url is: http://finviz.com/export.ashx?v=111&f=sh_price_u1.
The second url has the funcitonality of triggering download, so instead of urllib2.urlopen("http://finviz.com/screener.ashx?v=111&f=sh_price_u1").read() I need
urllib2.urlopen("http://finviz.com/export.ashx?v=111&f=sh_price_u1").read()
This one does the job in python. Have a look. https://github.com/nicolamr/trending-value