python - Python requests.get() 循环不返回任何内容
问题描述
当试图抓取该网站的多个页面时,我没有得到任何内容作为回报。我通常会检查以确保lists
我创建的所有内容长度相同,但所有内容都以len = 0
.
我用过类似的代码来抓取其他网站,为什么这段代码不能正常工作?
我尝试过的一些解决方案,但没有达到我的目的:this answerrequests.Session()
中建议的解决方案,如建议here。.json
for page in range(100, 350):
page = requests.get("https://www.ghanaweb.com/GhanaHomePage/election2012/parliament.constituency.php?ID=" + str(page) + "&res=pm")
page.encoding = page.apparent_encoding
if not page:
pass
else:
soup = BeautifulSoup(page.text, 'html.parser')
ghana_tbody = soup.find_all('tbody')
sleep(randint(2,10))
for container in ghana_tbody:
#### CANDIDATES ####
candidate = container.find_all('div', class_='can par')
for data in candidate:
cand = data.find('h4')
for info in cand:
if cand is not None:
can2 = info.get_text()
can.append(can2)
#### PARTY NAMES ####
partyn = container.find_all('h5')
for data in partyn:
if partyn is not None:
partyn2 = data.get_text()
pty_n.append(partyn2)
#### CANDIDATE VOTES ####
votec = container.find_all('td', class_='votes')
for data in votec:
if votec is not None:
votec2 = data.get_text()
cv1.append(votec2)
#### CANDIDATE VOTE SHARE ####
cansh = container.find_all('td', class_='percent')
for data in cansh:
if cansh is not None:
cansh2 = data.get_text()
cvs1.append(cansh2)
#### TOTAL VOTES ####`
tfoot = soup.find_all('tr', class_='total')
for footer in tfoot:
fvote = footer.find_all('td', class_='votes')
for data in fvote:
if fvote is not None:
fvote2 = data.get_text()
fvoteindiv = [fvote2]
fvotelist = fvoteindiv * (len(pty_n) - len(vot1))
vot1.extend(fvotelist)
在此先感谢您的帮助!
解决方案
我做了一些简化更改。需要改变的主要变化是:
ghana_tbody = soup.find_all('table', class_='canResults')
can2 = info # not info.get_text()
我只针对第 112 页进行了测试;生命太短暂。
import requests
from bs4 import BeautifulSoup
from random import randint
from time import sleep
can = []
pty_n = []
cv1 = []
cvs1 = []
vot1 = []
START_PAGE = 112
END_PAGE = 112
for page in range(START_PAGE, END_PAGE + 1):
page = requests.get("https://www.ghanaweb.com/GhanaHomePage/election2012/parliament.constituency.php?ID=112&res=pm")
page.encoding = page.apparent_encoding
if not page:
pass
else:
soup = BeautifulSoup(page.text, 'html.parser')
ghana_tbody = soup.find_all('table', class_='canResults')
sleep(randint(2,10))
for container in ghana_tbody:
#### CANDIDATES ####
candidate = container.find_all('div', class_='can par')
for data in candidate:
cand = data.find('h4')
for info in cand:
can2 = info # not info.get_text()
can.append(can2)
#### PARTY NAMES ####
partyn = container.find_all('h5')
for data in partyn:
partyn2 = data.get_text()
pty_n.append(partyn2)
#### CANDIDATE VOTES ####
votec = container.find_all('td', class_='votes')
for data in votec:
votec2 = data.get_text()
cv1.append(votec2)
#### CANDIDATE VOTE SHARE ####
cansh = container.find_all('td', class_='percent')
for data in cansh:
cansh2 = data.get_text()
cvs1.append(cansh2)
#### TOTAL VOTES ####`
tfoot = soup.find_all('tr', class_='total')
for footer in tfoot:
fvote = footer.find_all('td', class_='votes')
for data in fvote:
fvote2 = data.get_text()
fvoteindiv = [fvote2]
fvotelist = fvoteindiv * (len(pty_n) - len(vot1))
vot1.extend(fvotelist)
print('can = ', can)
print('pty_n = ', pty_n)
print('cv1 = ', cv1)
print('cvs1 = ', cvs1)
print('vot1 = ', vot1)
印刷:
can = ['Kwadwo Baah Agyemang', 'Daniel Osei', 'Anyang - Kusi Samuel', 'Mary Awusi']
pty_n = ['NPP', 'NDC', 'IND', 'IND']
cv1 = ['14,966', '9,709', '8,648', '969', '34292']
cvs1 = ['43.64', '28.31', '25.22', '2.83', '\xa0']
vot1 = ['34292', '34292', '34292', '34292']
请务必先将 START_PAGE 和 END_PAGE 分别更改为 100 和 350。
推荐阅读
- python - AWS - S3 - GetBucketPolicy
- r - 有没有一种简单的方法来判断存储在一个列表中的许多数据帧是否包含相同的列?
- javascript - 陷入 else if Javascript 循环
- html - CSS位置相对div没有响应
- python - warnings.simplefilter("always") 不会强制在 Python 2.7 中发出警告
- c++11 - 自定义模板的 SFINAE 失败。需要了解原因
- angular - 在材料之上构建自定义 UI 组件库
- sql - Postgresql 计数行分组
- mysql - 无法从 docker 容器连接到 db
- ios - AssetManifests + 签名:通过绕过 AssetManifestSigning 来欺骗 iOS 从自定义来源获取操作系统资产?