Web scraper在终端返回零

Question

我正在试着抓取这个网站

https://www.merinfo.se/search?d=c& ap = 1, emp = 0% 3 a20&牧师= 0% 3 a100&谁= bygg&男朋友= 1,页面= 1

我把一个def getQuestions(tag)在谁={tag}部分的url，这工作得很好。当我尝试添加def getQuestions(tag, page) page={page}时，它只是在终端返回0，我真的希望没有线索可能导致这种情况。

下面是完整的代码:

import requests
from bs4 import BeautifulSoup
headers = {'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.107 Safari/537.36'}
questionlist = []
def getQuestions(tag, page):
url = 'https://www.merinfo.se/search?d=c&ap=1&emp=0%3A20&rev=0%3A100&who={bygg}&bf=1&page={page}'
r = requests.get(url, headers=headers)
soup = BeautifulSoup(r.text, 'html.parser')
questions = soup.find_all('div', {'class': 'box-white p-0 mb-4'})
for item in questions:
question = {
'title': item.find('a', {'class': 'link-primary'}).text,
'link': item.find('a', {'class': 'link-primary'})['href'],
'nummer': item.find('a', {'class': 'link-body'})['href'],
'address': item.find('address', {'class': 'mt-2 mb-0'}).text,
'RegÅr': item.find('div', {'class': 'col text-center'}).text,
}
questionlist.append(question)
return
for x in range(1,5):
getQuestions('bygg', x)
print(len(questionlist))

任何帮助都会很感激。最好的问候!

Answer 1

将url变量中的字符串更改为f-string:

import requests
from bs4 import BeautifulSoup
headers = {
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.107 Safari/537.36"
}

def getQuestions(tag, page):
questionlist = []
url = f"https://www.merinfo.se/search?d=c&ap=1&emp=0%3A20&rev=0%3A100&who={tag}&bf=1&page={page}"
r = requests.get(url, headers=headers)
soup = BeautifulSoup(r.text, "html.parser")
questions = soup.find_all("div", {"class": "box-white p-0 mb-4"})
for item in questions:
question = {
"title": item.find("a", {"class": "link-primary"}).text,
"link": item.find("a", {"class": "link-primary"})["href"],
"nummer": item.find("a", {"class": "link-body"})["href"],
"address": item.find("address", {"class": "mt-2 mb-0"}).text,
"RegÅr": item.find("div", {"class": "col text-center"}).text,
}
questionlist.append(question)
return questionlist

out = []
for x in range(1, 5):
out.extend(getQuestions("bygg", x))
print(len(out))

打印:

80

Answer 2

尝试将url更改为:

url = f'https://www.merinfo.se/search?d=c&ap=1&emp=0%3A20&rev=0%3A100&who={tag}&bf=1&page={page}'

你没有正确设置f- string