[已解决]bs4如何提取所需网址内容

PYthofreeze

下面的我想提取href中的内容  下面的列表保存在targets中  试过了for each in targets:each.get('hrref')不行



[<td class="classicLook0"><a href="detail.jsp?id=339884">
                        A0096
                </a></td>, <td class="classicLook0">问答题</td>, <td class="classicLook0">-</td>, <td class="classicLook0">-</td>, <td class="classicLook0">-</td>, <td class="classicLook0"><a href="detail.jsp?id=339876">
                        A0088
                </a></td>, <td class="classicLook0">问答题</td>, <td class="classicLook0">-</td>, <td class="classicLook0">-</td>, <td class="classicLook0">-</td>, <td class="classicLook0"><a href="detail.jsp?id=339868">
                        A0080
                </a></td>, <td class="classicLook0">问答题</td>, <td class="classicLook0">-</td>, <td class="classicLook0">-</td>, <td class="classicLook0">-</td>, <td class="classicLook0"><a href="detail.jsp?id=339860">
                        A0072
                </a></td>, <td class="classicLook0">问答题</td>, <td class="classicLook0">-</td>, <td class="classicLook0">-</td>, <td class="classicLook0">-</td>]
[<td class="classicLook1"><a href="detail.jsp?id=339883">
                        A0095
                </a></td>, <td class="classicLook1">问答题</td>,, ]

最佳答案

月排行榜 / 总排行榜

Twilight6

2020-6-9 10:49:19

PYthofreeze 发表于 2020-6-9 10:45
我需要提取的是href的网址  不知道怎么提

import requests
import bs4

proxies = {"http": "127.0.0.1:1080", "https": "127.0.0.1:1080"}
headers={'User-Agent':'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.25 Safari/537.36 Core/1.70.3756.400 QQBrowser/10.5.4039.400',
    'Cookie': 'JSESSIONID=B43CB1A6DA8EB51A0192BEED03A959D8.TM4; DWRSESSIONID=GdCgKTLhs$Pz*W*VaM0i2Fsyman; uudid=cms5e5b099a-6147-27a0-a5dd-4be724a0b523; SF_cookie_2=67313298; radius=180.91.162.174'}
session = requests.Session()
res = session.get('http://wlkc.jluzh.com/meol/personal.do?menuId=0',headers=headers)
print(res)


target_url='http://wlkc.jluzh.com/meol/common/question/questionbank/student/list.jsp?tagbug=client&cateId=27948&perm=3840&status=0&strStyle=new03'
tar_res =session.get(target_url,headers=headers)

soup = bs4.BeautifulSoup(tar_res.text,'html.parser')
targets = []
for i in range(8):
    targets += soup.find_all("td", class_="classicLook"+str(i))

for each in targets:
    if each.a == None:
        continue
    print(each.a.get('href'))

跳转到最佳答案楼层

Twilight6

发下代码吧，方便的话

数据提取-Beautiful Soup

PYthofreeze

Twilight6 发表于 2020-6-9 09:46
发下代码吧，方便的话

数据提取-Beautiful Soup

import requests
import bs4

target_url='http://wlkc.jluzh.com/meol/common/question/questionbank/student/list.jsp?tagbug=client&cateId=27948&perm=3840&status=0&strStyle=new03'
tar_res =session.get(target_url,headers=headers)

soup = bs4.BeautifulSoup(tar_res.text,'html.parser')

for i in range(8):
    targets = soup.find_all("td", class_="classicLook"+str(i))
    #print(targets)
for each in targets:
    print(each.a)

Twilight6

PYthofreeze 发表于 2020-6-9 09:59
import requests
import bs4

。。。代码不全吧

话说你这里循环了 不是就等于只有提取出 第七个时候的数据了

for i in range(8):
    targets = soup.find_all("td", class_="classicLook"+str(i))
    #print(targets)
for each in targets:
    print(each.a)

应该改成：

targets = []
for i in range(8):
    targets += soup.find_all("td", class_="classicLook"+str(i))
    #print(targets)
for each in targets:
    print(each.a)

PYthofreeze

Twilight6 发表于 2020-6-9 10:19
。。。代码不全吧

话说你这里循环了 不是就等于只有提取出 第七个时候的数据了

import requests
import bs4

proxies = {"http": "127.0.0.1:1080", "https": "127.0.0.1:1080"}
headers={'User-Agent':'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.25 Safari/537.36 Core/1.70.3756.400 QQBrowser/10.5.4039.400',
    'Cookie': 'JSESSIONID=B43CB1A6DA8EB51A0192BEED03A959D8.TM4; DWRSESSIONID=GdCgKTLhs$Pz*W*VaM0i2Fsyman; uudid=cms5e5b099a-6147-27a0-a5dd-4be724a0b523; SF_cookie_2=67313298; radius=180.91.162.174'}
session = requests.Session()
res = session.get('http://wlkc.jluzh.com/meol/personal.do?menuId=0',headers=headers)
print(res)


target_url='http://wlkc.jluzh.com/meol/common/question/questionbank/student/list.jsp?tagbug=client&cateId=27948&perm=3840&status=0&strStyle=new03'
tar_res =session.get(target_url,headers=headers)

soup = bs4.BeautifulSoup(tar_res.text,'html.parser')

for i in range(8):
    targets = soup.find_all("td", class_="classicLook"+str(i))
    #print(targets)
for each in targets:
    print(each.a)

PYthofreeze

Twilight6 发表于 2020-6-9 10:19
。。。代码不全吧

话说你这里循环了 不是就等于只有提取出 第七个时候的数据了

那个循环只到7是因为 我看过网页的代码了  只有0-7是符合的

PYthofreeze

Twilight6 发表于 2020-6-9 10:19
。。。代码不全吧

话说你这里循环了 不是就等于只有提取出 第七个时候的数据了

我需要提取的是href的网址  不知道怎么提

Twilight6

PYthofreeze 发表于 2020-6-9 10:45
我需要提取的是href的网址  不知道怎么提

import requests
import bs4

proxies = {"http": "127.0.0.1:1080", "https": "127.0.0.1:1080"}
headers={'User-Agent':'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.25 Safari/537.36 Core/1.70.3756.400 QQBrowser/10.5.4039.400',
    'Cookie': 'JSESSIONID=B43CB1A6DA8EB51A0192BEED03A959D8.TM4; DWRSESSIONID=GdCgKTLhs$Pz*W*VaM0i2Fsyman; uudid=cms5e5b099a-6147-27a0-a5dd-4be724a0b523; SF_cookie_2=67313298; radius=180.91.162.174'}
session = requests.Session()
res = session.get('http://wlkc.jluzh.com/meol/personal.do?menuId=0',headers=headers)
print(res)


target_url='http://wlkc.jluzh.com/meol/common/question/questionbank/student/list.jsp?tagbug=client&cateId=27948&perm=3840&status=0&strStyle=new03'
tar_res =session.get(target_url,headers=headers)

soup = bs4.BeautifulSoup(tar_res.text,'html.parser')
targets = []
for i in range(8):
    targets += soup.find_all("td", class_="classicLook"+str(i))

for each in targets:
    if each.a == None:
        continue
    print(each.a.get('href'))

PYthofreeze

Twilight6 发表于 2020-6-9 10:49

请问为什么有那么多的NONE  不应该阿 这一页 应该有三十个左右的href

Twilight6

PYthofreeze 发表于 2020-6-9 10:53
请问为什么有那么多的NONE  不应该阿 这一页 应该有三十个左右的href

这个我不清楚了  可能有些节点特殊，你自己看看网站审核元素找找规律

PYthofreeze

Twilight6 发表于 2020-6-9 10:55
这个我不清楚了  可能有些节点特殊，你自己看看网站审核元素找找规律

嗯嗯 谢谢了

Twilight6

PYthofreeze 发表于 2020-6-9 11:02
嗯嗯 谢谢了

没事~帮助到你记得给个最佳~