Web Scraping Using Selenium and Beautiful Soup but not Working - python

I am trying to get the author and content of the comment from a website but I found out that its Page Source and Inspect Elements are different. I tried to use BeautifulSoup but I cannot get anything back from it. Therefore, I tried to use Selenium but still, I couldn't get anything. I inspect elements from the website and put in the class name by using Selenium but still couldn't scrape anything back. Here is the code that I wrote.
web = "https://www.regulations.gov/document?D=WHD-2020-0007-0609"
#Selenium
driver = webdriver.Chrome()
driver.get(web)
name = driver.find_elements_by_name("GIY1LSJBID")
#Beautifulsoup
page = requests.get(web)
soup = BeautifulSoup(page.text, 'html.parser')
quotes = soup.find_all('div')
I am wondering did I do something wrong and how can I fix it?

You've already given the answer yourself. You are searching for an element by it's classname, but you use find_elements_by_name. This doesn't search for class name, but the name attribute in an element. Also find_elements with an 's' on the end means the function returns a list of elements not a single element.
In your case you need find_element_by_class_name("GIY1LSJBID")

Related

Extract a hyperlink from a website - Selenium

I was attempting to solve this issue for a bit of time and attempted multiple solution posted on here prior to opening this question.
I am currently attempting to a run a scraper with the following code
website = 'https://www.abitareco.it/nuove-costruzioni-milano.html'
path = Path().joinpath('util', 'chromedriver')
driver = webdriver.Chrome(path)
driver.get(website)
main = WebDriverWait(driver, 10).until(EC.presence_of_element_located((By.NAME, "p1")))
My goal hyperlink has word scheda in it:
i = driver.find_element_by_xpath('.//a[contains(#href, "scheda")]')
i.text
My first issue is that find_element_by_xpath only outputs a single hyperlink and second issue is that it is not extracting anything so far.
I'd appreciate any help and/or guidance.
You need to use find_elements instead :
for name in driver.find_elements(By.XPATH, ".//a[contains(#href, 'scheda')]"):
print(name.text)
Note that find_elements will return a list of web elements, where as find_element return a single web element.
if you specifically looking for href attribute then you can try the below code :
for name in driver.find_elements(By.XPATH, ".//a[contains(#href, 'scheda')]"):
print(name.get_attribute('href'))
There's 2 issues, looking at the website.
You want to find all elements, not just one, so you need to use find_elements, not find_element
The anchors actually don't have any text in them, so .text won't return anything.
Assuming what you want is to scrape the URLs of all these links, you can use .get_attribute('href') instead of .text, like so:
url_list = driver.find_elements(By.XPATH, './/a[contains(#href, "scheda")]')
for i in url_list:
print(i.get_attribute('href'))
It will detect all webelements that match you criteria and store them in a list. I just used print as an example, but obviously you may want to do more than just print the links.

Data scraper: the contents of the div tag is empty (??)

I am data scraping a website to get a number. This number changes dynamically every split second, but upon inspection, the number is shown. I just need to capture that number but the div wrapper that contains it, it returns no value. What am I missing? (please go easy on me as I am quite new to Python and data scraping).
I have some code that works and returns the piece of html that supposedly contains the data I want, but no joy, the div wrapper returns no value.
import requests
from bs4 import BeautifulSoup
r = requests.get('https://deuda-publica-espana.com')
deuda = BeautifulSoup(r.text, 'html.parser')
deuda = deuda.findAll('div', {'id': 'contador_PDEH'})
print(deuda)
I don't receive any errors, I am just getting [<div class="contador_xl contador_verde" id="contador_PDEH"></div>] with no value!
Indeed it is easy with selenium. I suspect there is a js script running a counter supplying the number which is why you can't find it with your method (as mentioned in comments)
from selenium import webdriver
d = webdriver.Chrome(r'C:\Users\User\Documents\chromedriver.exe')
d.get('https://deuda-publica-espana.com/')
print(d.find_element_by_id('contador_PDEH').text)
d.quit()

List links of xls files using Beautifulsoup

I'm trying to retrieve a list of downloadable xls files on a website.
I'm a bit reluctant to provide full links to the website in question.
Hopefully I'm able to provide all necessary details all the same.
If this is useless, please let me know.
Download .xls files from a webpage using Python and BeautifulSoup is a very similar question, but the details below will show that the solution most likely will have to be different since the links on that particular site are tagged with a href anchor:
And the ones I'm trying to get are not tagged the same way.
On the webpage, the files that are available for downloading are listed like this:
A simple mousehover gives these further details:
I'm following the setup here with a few changes to produce the snippet below that provides a list of some links, but not to any of the xls files:
from bs4 import BeautifulSoup
import urllib
import re
def getLinks(url):
with urllib.request.urlopen(url) as response:
html = response.read()
soup = BeautifulSoup(html, "lxml")
links = []
for link in soup.findAll('a', attrs={'href': re.compile("^http://")}):
links.append(link.get('href'))
return links
links1 = getLinks("https://SOMEWEBSITE")
A further inspection using ctrl+shift+I in Google Chrome reveals that those particular links do not have a href anchor tag, but rather a ng-href anchor tag:
So I tried changing that in the snippet above, but with no success.
And I've tried different combinations with e.compile("^https://"), attrs={'ng-href' and links.append(link.get('ng-href')), but still with no success.
So I'm hoping someone has a better suggestion!
EDIT - Further details
It seems it's a bit problematic to read these links directly.
When I use ctrl+shift+I and the Select an element in the page to inspect it Ctrl+Shift+C, this is what I can see when I hover over one of the links listed above:
And what I'm looking to extract here is the information associated with the ng-href tag. But If I right-click the page and select Show Source, the same tag only appears once along with som metadata(?):
And I guess this is why my rather basic approach is failing in the first place.
I'm hoping this makes sense to some of you.
Update:
using selenium
from selenium import webdriver
from selenium.webdriver.support.ui import WebDriverWait
driver = webdriver.Chrome()
driver.get('http://.....')
# wait max 15 second until the links appear
xls_links = WebDriverWait(driver, 15).until(lambda d: d.find_elements_by_xpath('//a[contains(#ng-href, ".xls")]'))
# Or
# xls_links = WebDriverWait(driver, 15).until(lambda d: d.find_elements_by_xpath('//a[contains(#href, ".xls")]'))
links = []
for link in xls_links:
url = "https://SOMEWEBSITE" + link.get_attribute('ng-href')
print(url)
links.append(url)
Assume ng-href is not dynamically generated, from your last image I see that the URL is not starts with https:// but the slash / you can try with regex URL contains .xls
for link in soup.findAll('a', attrs={'ng-href': re.compile(r"\.xls")}):
xls_link = "https://SOMEWEBSITE" + link['ng-href']
print(xls_link)
links.append(xls_link)
My guess is that the data you are trying to crawl is created dynamically: ng-href is one of AngularJs's constructs. You could try using Google Chrome's Network inspection as you already did (ctrl+shift+I) and see if you can find the url that is queried (open the network tab and reload the page). The query should typically return a JSON with the links to the xls-files.
There is a thread about a similar problem here. Perhaps that helps you: Unable to crawl some href in a webpage using python and beautifulsoup

Python scraping deep nested divs whose classes change

I'm somewhat new to python, and working on this 1st part of a project where i need to get the link(s) on a FanDuel page, and i've been spinning my tires trying get the 'href'.
Here's what the Inspect Element shows:
What i'm trying to get to is highlighted above.
I see that the seems to be the parent, but as you go down the tree, the classes listed with lettering (ie - "_a _ch _al _nr _dq _ns _nt _nu") changes from day to day.
What I noticed is that the 'href' that i need has a constant "data-test-id" that does not change, so i was trying to use that as my way to find what i need, but it does not seem to be working.
I'm not sure how far, or if, I need to drill down farther to get what I need, or if my code is totally off. Thanks for your help in advance!
import requests
from bs4 import BeautifulSoup
url = "https://www.fanduel.com/contests/mlb/96"
#authentication might not be necessary, it was a test, still getting the same results
site = requests.get(url, cookies={'X-Auth-Token':'MY TOKEN IS HERE'})
soup = BeautifulSoup(site.content, 'lxml')
game = soup.find_all('a', {'data-test-id':"ContestCardEnterLink"})
#If i use this, i get an error
game = soup.find_all('a', {'data-test-id':"ContestCardEnterLink"})[('href')]
print(game)
The HTML is constructed by javascript, to check this, instead of using inspect element, use view source-page and see if the HTML is already constructed there ( this is the html that you get when you do requests.get() ) ,i've already checked this and this is true. To resolve this, you should have to use Selenium to render the javascript on the page, and then you can get the source page code by selenium after he constructed the elements from DOM.

Finding span by class and extracting its contents

I want to extract text of a particular span which is given in the snapshot. I am unable to find the span by its class attribute. I have attached The html source (snapshot) of the data to be extracted as well.
Any suggestions?
import bs4 as bs
import urllib
sourceUrl='https://www.pakwheels.com/forums/t/planing-a-trip-from-karachi-to-lahore-by-road-in-feb-2017/414115/2'
source=urllib.request.urlopen(sourceUrl).read()
soup=bs.BeautifulSoup(source, 'html.parser')
count=soup.find('span',{'class':'number'})
print(len(count))
See the image:
If you disable JavaScript in your browser you can easily see that span element that you want are disappearing.
In order to get that element one of the possible solutions can be using Selenium browser.
from selenium import webdriver
driver = webdriver.Chrome()
driver.get('https://www.pakwheels.com/forums/t/planing-a-trip-from-karachi-to-lahore-by-road-in-feb-2017/414115/2')
span = driver.find_element_by_xpath('//li[3]/span')
print(span.text)
driver.close()
Output:
Another solution - find desired value deep down in web page source(in Chrome browser press Ctrl+U) and extract span value using a regular expression.
import re
import requests
r = requests.get(
'https://www.pakwheels.com/forums/t/planing-a-trip-from-karachi-to-lahore-by-road-in-feb-2017/414115/2')
span = re.search('\"posts_count\":(\d+)', r.text)
print(span.group(1))
Output:
If You know how to use CSS SELECTORS you can use :
mySpan = soup.select("span.number")
It will return List of all nodes which are valid for this selector.
So mySpan[0] could contain what You need. And then use one of the methods like for example get_text() to get what You need.
First of all you need to decode response
source=urllib.request.urlopen(sourceUrl).read().decode()
Maybe your issue will disappears after this fix

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