I am trying to get a value from a website using beautiful soup but it keeps returning none. This is what I have for my code so far
def getmarketchange():
source = requests.get("https://www.coinbase.com/price").text
soup = bs4.BeautifulSoup(source, "lxml")
marketchange = soup.get("MarketHealth__Percent-sc-1a64a42-2.bEMszd")
print(marketchange)
getmarketchange()
and attached is a screenshot of html code I was trying to grab.
Thank you for your help in advance!
Have a look at the HTML source returned from your get() request - it's a CAPTCHA challenge. You won't be able to get to the Coinbase pricing without passing this challenge.
Excerpt:
<h2 class="cf-subheadline"><span data-translate="complete_sec_check">
Please complete the security check to access</span> www.coinbase.com
</h2>
<div class="cf-section cf-highlight cf-captcha-container">
Coinbase is recognizing that the HTTP request isn't coming from a standard browser-based user, and it is challenging the requester. BeautifulSoup doesn't have a way to pass this check on its own.
Passing in User-Agent headers (to mimic a browser request) also doesn't resolve this issue.
For example:
headers = {'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95 Safari/537.36'}
source = requests.get("https://www.coinbase.com/price", headers=headers).text
You might find better luck with Selenium, although I'm not sure about that.
To prevent a captcha page, try to specify User-Agent header:
import requests
from bs4 import BeautifulSoup
url = 'https://www.coinbase.com/price'
headers = {'User-Agent': 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:80.0) Gecko/20100101 Firefox/80.0'}
soup = BeautifulSoup(requests.get(url, headers=headers).content, 'html.parser')
print(soup.select_one('[class^="MarketHealth__Percent"]').text)
Prints:
0.65%
Related
I am trying to scrape data from a Twitter webpage using Python but instead of getting the data back, I keep getting "Javascript is not available". I've enabled Javascript in my browser(chrome) but nothing changes.
Here is the error -->
<h1>JavaScript is not available.</h1>
<p>We’ve detected that JavaScript is disabled in this browser. Please enable JavaScript or switch to a supported browser to continue using twitter.com. You can see a list of supported browsers in our Help Center.</p>
Here is the code -->
from bs4 import BeautifulSoup
import requests
url = "https://twitter.com/search?q=%23developer%20advocate&src=typed_query&f=user"
source_code = requests.get(url).text
soup = BeautifulSoup(source_code, "lxml")
content = soup.find("div")
print(content)
I've tried enabling Javascript in my browser(chrome), I expected to get the required data back instead the error "Javascript is not availble" persists.
I will never advise scraping twitter by violating their policies, you should use an API instead! But for the Javascript part, just pass user agent in headers in your requests.
from bs4 import BeautifulSoup
import requests
user_agent = 'Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36'
headers = {'User-Agent': user_agent}
url = "https://twitter.com/search?q=%23developer%20advocate&src=typed_query&f=user"
source_code = requests.get(url, headers=headers).text
soup = BeautifulSoup(source_code, "lxml")
content = soup.find("div")
print(content)
I tried running this Python script using BeautifulSoup and requests modules :
from bs4 import BeautifulSoup as bs
import requests
url = 'https://udemyfreecourses.org/
headers = {'UserAgent' : 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.193 Safari/537.36'
}
soup = bs(requests.get(url, headers= headers).text, 'lxml')
But when I send this line :
print(soup.get_text())
It doesn't scrape the text data but instead, It returns this output:
Not Acceptable!Not Acceptable!An appropriate representation of the requested resource could not be found on this server. This error was generated by Mod_Security.
I even even used headers when requesting the webpage, so It can looks like a normal navigator, but I'm still getting this message that's preventing me from accessing the real webpage
Note : The webpage is working perfectly on the navigator directly, but It doesn't show much info when I try to scrape it.
Is there any other way than the one I used with headers that can get a perfect valid request from the website and bypass this security called Mod_Security?
Any help would be very very helpful, Thanks.
EDIT: The Dash in "User-Agent" is essential.
Following this Answer https://stackoverflow.com/a/61968635/8106583
headers = {
'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:55.0) Gecko/20100101 Firefox/55.0',
}
Your User-Agent is the problem. This User-Agent works for me.
Also: Your ip might be blocked by now :D
I am running the following code to parse an amazon page using beautiful soup in Python but when I run the print line, I keep getting None. I am wondering whether I am doing something wrong or if theres an explanation/solution to this. Any help will be appreciated.
import requests
from bs4 import BeautifulSoup
URL = 'https://www.amazon.ca/Magnetic-Erase-Whiteboard-Bulletin-
Board/dp/B07GNVZKY2/ref=sr_1_3_sspa?keywords=whiteboard&qid=1578902710&s=office&sr=1-3-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEzOE5ZSkFGSDdCOFVDJmVuY3J5cHRlZElkPUEwMDM2ODA4M0dWMEtMWkI1U1hJJmVuY3J5cHRlZEFkSWQ9QTA0MDIwMjQxMEUwMzlMQ0pTQVlBJndpZGdldE5hbWU9c3BfYXRmJmFjdGlvbj1jbGlja1JlZGlyZWN0JmRvTm90TG9nQ2xpY2s9dHJ1ZQ=='
headers = {"User-Agent": 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.117 Safari/537.36'}
page = requests.get(URL, headers=headers)
soup = BeautifulSoup(page.content, 'html.parser')
title = soup.find(id="productTitle")
print(title)
Your code is absolutely correct.
There seems to be some issue with the the parser that you have used (html.parser)
I used html5lib in place of html.parser and the code now works:
import requests
from bs4 import BeautifulSoup
URL = 'https://www.amazon.ca/Magnetic-Erase-Whiteboard-BulletinBoard/dp/B07GNVZKY2/ref=sr_1_3_sspa?keywords=whiteboard&qid=1578902710&s=office&sr=1-3-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUEzOE5ZSkFGSDdCOFVDJmVuY3J5cHRlZElkPUEwMDM2ODA4M0dWMEtMWkI1U1hJJmVuY3J5cHRlZEFkSWQ9QTA0MDIwMjQxMEUwMzlMQ0pTQVlBJndpZGdldE5hbWU9c3BfYXRmJmFjdGlvbj1jbGlja1JlZGlyZWN0JmRvTm90TG9nQ2xpY2s9dHJ1ZQ=='
headers = {"User-Agent": 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.117 Safari/537.36'}
page = requests.get(URL, headers=headers)
soup = BeautifulSoup(page.content, 'html5lib')
title = soup.find(id='productTitle')
print(title)
More Info not directly related to the answer:
For the other answer given to this question, I wasn't asked for a captcha when visiting the page.
However Amazon does change the response content if it detects that a bot is visiting the website: Remove the headers from requests.get() method, and try page.text
The default headers added by requests library lead to the identification of the request as being form a bot.
When requesting that page outside of a normal browser environment it asked for a captcha, I'd assume that's why the element doesn't exist.
Amazon probably has specific measures to counter "robots" accessing their pages, I suggest to look at their APIs to see if there's anything helpful instead of scraping the webpages directly.
I'm trying to scrape all the HTML elements of a page using requests & beautifulsoup. I'm using ASIN (Amazon Standard Identification Number) to get the product details of a page. My code is as follows:
from urllib.request import urlopen
import requests
from bs4 import BeautifulSoup
url = "http://www.amazon.com/dp/" + 'B004CNH98C'
response = urlopen(url)
soup = BeautifulSoup(response, "html.parser")
print(soup)
But the output doesn't show the entire HTML of the page, so I can't do my further work with product details.
Any help on this?
EDIT 1:
From the given answer, It shows the markup of the bot detection page. I researched a bit & found two ways to breach it :
I might need to add a header in the requests, but I couldn't understand what should be the value of header.
Use Selenium.
Now my question is, do both of the ways provide equal support?
It is better to use fake_useragent here for making things easy. A random user agent sends request via real world browser usage statistic. If you don't need dynamic content, you're almost always better off just requesting the page content over HTTP and parsing it programmatically.
import requests
from fake_useragent import UserAgent
headers = {'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95 Safari/537.36'}
ua=UserAgent()
hdr = {'User-Agent': ua.random,
'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
'Accept-Charset': 'ISO-8859-1,utf-8;q=0.7,*;q=0.3',
'Accept-Encoding': 'none',
'Accept-Language': 'en-US,en;q=0.8',
'Connection': 'keep-alive'}
url = "http://www.amazon.com/dp/" + 'B004CNH98C'
response = requests.get(url, headers=hdr)
print response.content
Selenium is used for browser automation and high level web scraping for dynamic contents.
As some of the comments already suggested, if you need to somehow interact with Javascript on a page, it is better to use selenium. However, regarding your first approach using a header:
import requests
from bs4 import BeautifulSoup
url = "http://www.amazon.com/dp/" + 'B004CNH98C'
headers = {'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.95 Safari/537.36'}
response = requests.get(url, headers=headers)
soup = BeautifulSoup(response.text,"html.parser")
These headers are a bit old, but should still work. By using them you are pretending that your request is coming from a normal webbrowser. If you use requests without such a header your code is basically telling the server that the request is coming from python, which most of the servers are rejecting right away.
Another alternative for you could also be fake-useragent maybe you can also have a try with this.
try this:
import requests
from bs4 import BeautifulSoup
url = "http://www.amazon.com/dp/" + 'B004CNH98C'
r = requests.get(url)
r = r.text
##options #1
# print r.text
soup = BeautifulSoup( r.encode("utf-8") , "html.parser")
### options 2
print(soup)
I am getting certain elements in google chrome (Inspect) but not in internet explorer when I view the source of the same web page.
I assume Beautiful Soup uses internet explorer inside? Its results match IE more closely.
However when I use the Inspect feature of chrome, I see certain elements not listed in the source.
Is there a way I can emulate this in Python or using Beautiful Soup?
You can change your user agent's to one of the following:
https://webscraping.com/blog/User-agents/
A Snippet: changing User-Agent forces the page to open different contets (mobile vs Chrome)
from bs4 import BeautifulSoup
import requests
#headers = {'User-Agent': 'Mozilla/5.0 (X11; U; Linux i686; en-US) AppleWebKit/534.3 (KHTML, like Gecko) Chrome/6.0.472.63 Safari/534.3'}
headers = {'User-Agent': 'Mozilla/5.0 (Linux; Android 5.1.1; SM-G928X Build/LMY47X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.83 Mobile Safari/537.36'}
result = requests.get("http://derstandard.at", headers=headers)
c = result.content
print result.request.headers
print len(c)
Note: Some websites are protecting them selfes for user-agent spoofing. So not all websites might respond to these frequent jumps.