WebScraper | .NET library to scrape content from the Internet | Scraper library
kandi X-RAY | WebScraper Summary
kandi X-RAY | WebScraper Summary
.NET library to scrape content from the Internet. Use it to extract information from Web pages in your own application. The library writes the extracted data to a CSV file.
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QUESTION
I try to implement a webscraper.
I thought the issue was my rust code for the longest time but as the title suggests it seems to be the query selector I am trying to use to locate the element. I am trying to crall this page and extract the href on the twitter follow button.
When using $$("#follow-button")
in chrome devTools I get a null response until the element is inspected then the query returns the correct thing. Could anyone please shed some light on why this element doesn't seem to exist until inspected? I can provide links to rust code if that would be helpful.
ANSWER
Answered 2022-Mar-31 at 12:05The link is in an iframe. You have to select the Iframes src, and request for it's document, then you can select any of its children.
QUESTION
I am building a webscraper to aquire a bunch of baseball data, I am 99% sure that the code that I wrote works, I have tested it all seperatley and it should get the data taht I want. However, I have not been able to run it all the way through yet without giving me a webdriver error like this:
...ANSWER
Answered 2022-Mar-23 at 20:04import requests
from bs4 import BeautifulSoup, Comment
import pandas as pd
import re
url = 'https://www.baseball-reference.com/register/league.cgi?code=NWDS&class=Smr'
headers = {'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.104 Safari/537.36'}
# Get links
response = requests.get(url, headers=headers)
soup = BeautifulSoup(response.text, 'html.parser')
yearLinks = soup.find_all('th', {'data-stat':'year_ID'})
links = {}
for year in yearLinks:
if year.find('a', href=True):
links[year.text] = 'https://www.baseball-reference.com' + year.find('a', href=True)['href']
final_df = {'batting':[], 'pitching':[]}
for year, link in links.items():
print(year)
response = requests.get(link, headers=headers)
soup = BeautifulSoup(response.text, 'html.parser')
if soup.find_all('th', {'data-stat':'team_ID'}):
team_links = soup.find_all('th', {'data-stat':'team_ID'})
else:
team_links = []
comments = soup.find_all(string=lambda text: isinstance(text, Comment))
for each in comments:
if 'th' in str(each):
try:
soupAlpha = BeautifulSoup(str(each), 'html.parser').find_all('th', {'data-stat':'team_ID'})
if soupAlpha != []:
team_links += soupAlpha
except:
continue
teamLinks = {}
for team_link in team_links:
if team_link.find('a', href=True):
teamLinks[team_link.text] = 'https://www.baseball-reference.com' + team_link.find('a', href=True)['href']
for team, teamLink in teamLinks.items():
print(f'\t{team}')
response = requests.get(teamLink, headers=headers)
soup = BeautifulSoup(response.text, 'html.parser')
batting_table = pd.read_html(response.text, attrs = {'id': 'team_batting'})[0]
batting_table['Year'] = year
batting_table['Team'] = team
print(f'\t\t{team} - batting stats')
comments = soup.find_all(string=lambda text: isinstance(text, Comment))
for each in comments:
if 'table' in str(each):
try:
pitching_table = pd.read_html(str(each), attrs = {'id': 'team_pitching'})[0]
batting_table['Year'] = year
batting_table['Team'] = team
print(f'\t\t{team} - pitching stats')
break
except:
continue
final_df['batting'].append(batting_table)
final_df['pitching'].append(pitching_table)
batting = pd.concat(final_df['batting'], axis=0)
pitching = pd.concat(final_df['pitching'], axis=0)
QUESTION
Got a basic Google webscraper that returns urls of the first google search page - I want it to include URLS on further pages. What's the best way to paginate this code so as it grabs URLS from pages 2,3,4,5,6,7 etc.
Don't want to go off into space with how many pages I scrap but definitely want more than the first page !
...ANSWER
Answered 2022-Mar-07 at 14:28You can iterate over a specific range()
and set the start parameter by multiply the number of iteration by 10 - Save your results to a list
and use set()
to remove duplicates:
QUESTION
I am writing some code to get a list of certain counties in Florida for a database. These counties are listed on a website but are each on individual webpages. To make the collection process less tedious I am writing a webscraper. I have gotten the links to all of the websites with the counties. I have written code that will then inspect the website, find the line that says "COUNTY:" and then I want to get the location so I can actually get the county on the next line. The only problem is when I ask for the location it says it can't be found. I know it is in there because when I ask my code to find it and then return the line (Not the placement) it doesn't return empty. I will give some of the code for reference and an image of the problem.
Broken code:
...ANSWER
Answered 2022-Feb-05 at 21:57county_before_location
is a list and you are asking for the index of said list, which is not in r. Instead you would need to ask for r.index(county_before_location[0])
.
QUESTION
So I have this code and I take an image from Internet with webscrapper, the problem is that when I try to take the image with the basic URl without the http:// behind it don't work and when I add it I don't have any error but I got a black screen on my emulator and I can't see this value of the image on my terminal even if I know the value is not null. If someone can help I will be very greatful thank you very much !
...ANSWER
Answered 2022-Jan-31 at 03:52Please check the below code it's working perfectly
QUESTION
site i am selecting from looks roughly like this
...ANSWER
Answered 2022-Jan-30 at 19:05nth-child(n)
counts all children of the element, regardless of the type of element (tag name). If there are other elements of different type coming before your target element nth-child
will fail to find the correct element and may return null.
However, the selector nth-of-type(n)
matches elements based on their position among siblings of the same type (tag name)
and ignores elements of a different type.
QUESTION
I wrote a webscraper which is downloading table tennis data. There is info about players, match score etc. I would like to display players which lost the most matches per day. I've created data frame and I would like to sum p1_status and p2_status, then I would like to display Surname and number of loses next to player.
https://gyazo.com/19c70e071db78071e83045bfcea0e772
Here is my code:
...ANSWER
Answered 2021-Dec-04 at 14:03Split your dataframe in 2 parts (p1_, p2_) to count defeats of each player then merge them:
Setup a MRE:
QUESTION
Trying to understand how web scraping works:
...ANSWER
Answered 2021-Nov-20 at 20:37You call the print()
after you finally iterated over your results, thats why you only get the last one.
Put the print()
into your loop
QUESTION
my Python code throws an Error after a short period of 5 to 7 requests or so called "File "c:/Users/xxx/Desktop/Webscraper.py", line 15, in programm zeit=(webseite["data"]).
KeyError: 'data'
Why does it throw this error ? The key always should be there.
...ANSWER
Answered 2021-Oct-09 at 19:52Websites can fail intermittently for many reasons. Perhaps you make too many requests or the server is overloaded or its down for maintenance. Your code should check error codes which will help find out what goes wrong.
Since you want to keep trying, you could just add that into your code. I've extracted the data gathering into a separate function that only returns when it gets good stuff. This reduces repetition in your code.
QUESTION
I'm trying to connect to a web server so I can scrape it but my program gives me the error: "Connection refused" coming from the connect function. heres the code:
...ANSWER
Answered 2021-Sep-07 at 18:59I made a few changes to get it to make a successful HTTP request:
- Added the
Host:
field to the HTTP 1.1 request. It's an error not to supply that field. - I made it send the proper amount of bytes for
GETrqst
. It should bestrlen(GETrqst)
, notsizeof(GETrqst)
. - You copy the wrong thing into
socket_address.sin_addr
ininet_aton(getResult2->ai_addr->sa_data, &socket_address.sin_addr);
. You have the correct thing in((struct sockaddr_in *) getResult2->ai_addr)->sin_addr
and need only to copy that.
With my changes:
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