web-scraper | Perl web scraping toolkit | Scraper library
kandi X-RAY | web-scraper Summary
kandi X-RAY | web-scraper Summary
Web::Scraper is a web scraper toolkit, inspired by Ruby's equivalent Scrapi. It provides a DSL-ish interface for traversing HTML documents and returning a neatly arranged Perl data structure. The scraper and process blocks provide a method to define what segments of a document to extract. It understands HTML and CSS Selectors as well as XPath expressions.
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Community Discussions
Trending Discussions on web-scraper
QUESTION
I have some html where the URL in the a href comes before the title that would appear on the page. I am trying to get at that title and url and extract that into a data frame. The following code is what I have so far.
...ANSWER
Answered 2022-Mar-17 at 21:05Just call .text
on the in each of the
QUESTION
I just started learning about web scraping and I found this tutorial: https://www.mundojs.com.br/2020/05/25/criando-um-web-scraper-com-nodejs/
It works fine, however I'm trying to get different elements from the same webpage: https://ge.globo.com/futebol/brasileirao-serie-a/
With the group of classes of the tutorial it brings all the elements with the selected class, but with other classes it doesn't work:
As can be seen all fifty elements with the class ranking-item-wrapper
are returned, but if I select elements with the class lista-jogos__jogo
it doesn't return anything:
I don't get why I'm getting this error, since I'm doing exectly the same thing as it is done in the tutorial.
Here is a short version of the code:
...ANSWER
Answered 2021-Nov-27 at 22:45It looks like those elements are being added with JavaScript when the page is loaded.
If you inspect the page in your browser with JavaScript disabled you can see that those elements don't exist, so they also wont exist when you pull down the page with Cheerio.
QUESTION
I've been working on a web-scraper to scrape the CoinEx website so I can have the live trades of Bitcoin in my program. I scraped this link and I was expecting to get all the information related to the class_="ticker-item" but the return was "--". I think it's something with the scraping policy but is there a way I can bypass this. Like to mimic whatever a regular browser has. I also tried using headers but the result was the same. My Code :
...ANSWER
Answered 2021-Jul-24 at 10:04It seems the problem is that the html you see when viewing the page in the browser is not the same html that BeautifulSoup receives. The reason is probably that the ticker-items are called using javascript, which is something the browser does for you, but BeautifulSoup does not.
If you want to get the data, you are probably best of by finding their api if they have one. Otherwise, you can look at the webpage using inspect, and look at the network tab. Here you can find where the website is pulling data from. It will be some digging, but somewhere in there you should be able to find another link, which is where the website gets the data from. You can then use that link instead. The data will probably be easier to extract that way as well.
If you want a quick and dirty method you can use the requests-html module. This renders the webpage for you, including all the scripts because it uses a webbrowser under the hood. Therefore the output will be the same html you would see if you opened the website in a browser, and your extraction method should work there. Of course this has a lot of overhead, because it spawns webbrowser processes, but it can be useful in some circumstances.
QUESTION
I'm having problem with print page numbers for my web-scraper.
Here I have page range
...ANSWER
Answered 2021-Sep-01 at 13:36As you always have an offset of 72, you can print it with
QUESTION
I'm having a bit of trouble with my wikipedia table web-scraper: The trouble is that it will not read the text in the cells. I have defined the table - no problems there, i have defined the rows, no problem there. My code looks like this:
...ANSWER
Answered 2021-Sep-01 at 10:40Put th
, td
to list together inside .find_all
:
QUESTION
I am working to write a web-scraper for a school project which catalogs all valid URLs found on the page, and can follow a URL to the next webpage and perform the same action; up to a set number of layers.
quick code intent:
- function takes a BeautifulSoup type, a url (to indicate where it started), the layer count, and the maximum layer depth
- check page for all href lines
- append to list of 'results' is populated each time an href tag is found containing a valid url (starts with http, https, HTTP, HTTPS; which I know may not be the perfect way to check but for now its what I am working with)
- the layer is incremented by 1 each time a valid URL is found the recursiveLinkSearch() function called again
- when layer count is reached, or no href's remain, return results list
I am very out of practice with recursion, and am hitting an issue with python adding a 'None' to the list "results" at the end of the recursion.
This link [https://stackoverflow.com/questions/61691657/python-recursive-function-returns-none] indicates that it may be where I am exiting my function from. I am also not sure I have recursion operating properly because of the nested for loop.
Any help or insight on recursion exit strategy is greatly appreciated.
...ANSWER
Answered 2021-Aug-23 at 23:27This is not a recursion problem. In the end, if results != []:
you print something and return results
. Else your function just ends and returns nothing. But in python, if your append the value of function that returned nothing - you get None
. So when your result is left empty - you are getting None
.
You can either check what you are appending or pop()
if you got None
after appending.
QUESTION
I'm building a simple web-scraper (scraping jobs from indeed.com) for practice and I'm trying to implement the following method (low_salary?(salary)). The aim is for the method to compare a minimum (i.e. desired) salary, compare it with the offered salary contained in the job object (@salary):
...ANSWER
Answered 2021-Aug-10 at 19:32A quick search on the URL you're scraping shows there are job posts that don't have a salary, so, when you get the data from that HTML element and initialize a new Job object, the salary is an empty string, and knowing that "".split(/[^\d]/)[1..2]
returns nil, that's the error you get.
You must add a way to handle job posts without a salary:
QUESTION
I'm trying to store some fields derived from a webpage in mysql table. The script that I've created can parse the data and store them in the table. However, as the username is non-english, the table stores the name as ????????? ?????????
instead of Αθανάσιος Σουλιώτης
.
Script I've tried with:
...ANSWER
Answered 2021-Jun-12 at 12:47Please read this and try again.
I added the commit on a new 3 lines.
QUESTION
I just switched from C to Python and to get some practice I want to code a simple web-scraper for price comparison. It works so far that the program goes to every website I tell it to, and it gives me the information of the website back as html. But when I try to tell BeautifulSoup to just find the prices, the output is 'None'. So I think that the html address, I am passing to BeautifulSoup as the price information is wrong.
I would be really grateful if anyone could help me with that problem or just has some tips and tricks for a beginner! I will add my python code and the link to the website since it looks kinda messy if I put the html code here, just tell me if you need anything more. Thank you!
https://www.momox.de/offer/9783833879500
I would just need the part where it says 8,87€ (or whatever €, price is changing constantly), but looks like i got the wrong part of the html code..
...ANSWER
Answered 2021-May-30 at 13:46The price is loaded with Ajax request from external URL. You can use this example how to load it using requests
module:
QUESTION
I have a dropdown and lets say the dropdown's code looks something like this:
...ANSWER
Answered 2021-Apr-20 at 00:14select_by_visible_text
is probably what you need.
Also add waits for dropdown to load when you open it
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