[已解决]基础爬虫——爬许嵩

会计也学 · 发表于 2022-1-9 17:20:39

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有没有大哥教一下如何爬百度上的许嵩图片
import urllib.request
import re
from bs4 import BeautifulSoup
def main():
url="https://cn.bing.com/images/search?q=%E8%AE%B8%E5%B5%A9&form=HDRSC2&first=1&tsc=ImageBasicHover"
datalist =getData(url)
find_picture=re.compile(r'href="/image/search?(.*?)""alt="许嵩的图像结果"/>"')
def askurl(url):
head = {"User-Agent":" Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.55 Safari/537.36 Edg/96.0.1054.43"}
request = urllib.request.Request(url,headers=head)
html=""
try:
      response = urllib.request.urlopen(request)
      html=response.read().decode("utf-8")
except urllib.error.URLError as e:
      if hasattr(e,"code"):
         print(e.code)
      if hasattr(e,"reason"):
         print(e.reason)
return html
def getData(url):
html=askurl(url)
soup = BeautifulSoup(html, "html.parser")
html=str(html)
picture= re.findall(find_picture,html)
print(picture)
if __name__=="__main__":
main()
我这好像很多问题，尤其是正则表达式那里，感觉写不出来合适的。系统给的结果是可以执行，但并没有执行print(picture)这一步

最佳答案

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大马强

2022-1-10 09:14:44

正则没写对呀，当然没结果

import urllib.request
import re
from bs4 import BeautifulSoup
def main():
url = "https://cn.bing.com/images/search?q=%E8%AE%B8%E5%B5%A9&form=HDRSC2&first=1&tsc=ImageBasicHover"
datalist = getData(url)
# 源码图片有两种格式
# <img class="mimg" style="background-color:#925839;color:#925839" height="182" width="182" src="https://tse4-mm.cn.bing.net/th/id/OIP-C.yTXj-rc8THlpAagM9o58TAHaHa?w=182&h=182&c=7&r=0&o=5&dpr=1.25&pid=1.7" alt="许嵩的图像结果"/>
# <img class="mimg vimgld" style="background-color:#3c1d19;color:#3c1d19" height="188" width="134" data-src="https://tse1-mm.cn.bing.net/th/id/OIP-C.dKR_c0_6PDuIM_ewjq7vzQHaKY?w=134&h=188&c=7&r=0&o=5&dpr=1.25&pid=1.7" alt="许嵩的图像结果"/>
find_picture = re.compile(
r'<img class="mimg.*?".*?src=(".*?") alt="许嵩的图像结果"')
def askurl(url):
head = {
"User-Agent": " Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.55 Safari/537.36 Edg/96.0.1054.43"}
request = urllib.request.Request(url, headers=head)
html = ""
try:
response = urllib.request.urlopen(request)
html = response.read().decode("utf-8")
except urllib.error.URLError as e:
if hasattr(e, "code"):
print(e.code)
if hasattr(e, "reason"):
print(e.reason)
# print(html)
return html
def getData(url):
html = askurl(url)
soup = BeautifulSoup(html, "html.parser")
picture = re.findall(find_picture, html)
# for i in
print(picture, len(picture))
if __name__ == "__main__":
main()

复制代码

跳转到最佳答案楼层

大马强 · 发表于 2022-1-10 09:14:44

正则没写对呀，当然没结果

import urllib.request
import re
from bs4 import BeautifulSoup
def main():
url = "https://cn.bing.com/images/search?q=%E8%AE%B8%E5%B5%A9&form=HDRSC2&first=1&tsc=ImageBasicHover"
datalist = getData(url)
# 源码图片有两种格式
# <img class="mimg" style="background-color:#925839;color:#925839" height="182" width="182" src="https://tse4-mm.cn.bing.net/th/id/OIP-C.yTXj-rc8THlpAagM9o58TAHaHa?w=182&h=182&c=7&r=0&o=5&dpr=1.25&pid=1.7" alt="许嵩的图像结果"/>
# <img class="mimg vimgld" style="background-color:#3c1d19;color:#3c1d19" height="188" width="134" data-src="https://tse1-mm.cn.bing.net/th/id/OIP-C.dKR_c0_6PDuIM_ewjq7vzQHaKY?w=134&h=188&c=7&r=0&o=5&dpr=1.25&pid=1.7" alt="许嵩的图像结果"/>
find_picture = re.compile(
r'<img class="mimg.*?".*?src=(".*?") alt="许嵩的图像结果"')
def askurl(url):
head = {
"User-Agent": " Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.55 Safari/537.36 Edg/96.0.1054.43"}
request = urllib.request.Request(url, headers=head)
html = ""
try:
response = urllib.request.urlopen(request)
html = response.read().decode("utf-8")
except urllib.error.URLError as e:
if hasattr(e, "code"):
print(e.code)
if hasattr(e, "reason"):
print(e.reason)
# print(html)
return html
def getData(url):
html = askurl(url)
soup = BeautifulSoup(html, "html.parser")
picture = re.findall(find_picture, html)
# for i in
print(picture, len(picture))
if __name__ == "__main__":
main()

复制代码

大马强 · 发表于 2022-1-10 09:23:03

['"https://tse4-mm.cn.bing.net/th/id/OIP-C.yTXj-rc8THlpAagM9o58TAHaHa?w=145&h=180&c=7&r=0&o=5&pid=1.7"', '"https://tse1-mm.cn.bing.net/th/id/OIP-C.lKHLs8pzS_AEF9oyQJlMWAHaKC?w=115&h=180&c=7&r=0&o=5&pid=1.7"', '"https://tse2-mm.cn.bing.net/th/id/OIP-C.G5iGItupfQ6wO7jo4OvEDwHaLH?w=115&h=180&c=7&r=0&o=5&pid=1.7"', '"https://tse4-mm.cn.bing.net/th/id/OIP-C.CoEDaJYBoGXzB2KTrTUekQHaLH?w=115&h=180&c=7&r=0&o=5&pid=1.7"', '"https://tse2-mm.cn.bing.net/th/id/OIP-C.Pp6SqAvYons5T1wQojCvEQHaEo?w=237&h=180&c=7&r=0&o=5&pid=1.7"', '"https://tse2-mm.cn.bing.net/th/id/OIP-C.g3jWwd1OUQdchKuwpO8fjgHaEo?w=237&h=180&c=7&r=0&o=5&pid=1.7"', '"https://tse3-mm.cn.bing.net/th/id/OIP-C.2x6GH87OA7FG6nGtuAfdRwHaE8?w=274&h=183&c=7&r=0&o=5&pid=1.7"', '"https://tse4-mm.cn.bing.net/th/id/OIP-C.OrSBZFBknVpJB9q1rZOj_QHaIv?w=155&h=183&c=7&r=0&o=5&pid=1.7"', '"https://tse3-mm.cn.bing.net/th/id/OIP-C.GHeAMIHzvXy5I8GdNm-zpQHaHa?w=183&h=183&c=7&r=0&o=5&pid=1.7"', '"https://tse3-mm.cn.bing.net/th/id/OIP-C.Tg2myQOlxuCeLL8MguRBxAHaKD?w=135&h=183&c=7&r=0&o=5&pid=1.7"', '"https://tse1-mm.cn.bing.net/th/id/OIP-C._rF-GVQh-1trTW5H6T_kaAHaGB?w=225&h=183&c=7&r=0&o=5&pid=1.7"', '"https://tse2-mm.cn.bings://tse4-mm.cn.bing.net/th/id/OIP-C.BQVdT5WyY8to4Fme0Kz6ugHaHa?w=163&h=180&c=7&r=0&o=5&pid=1.7"', '"https://tse2-mm.cn.bing.net/th/id/OIP-C.LqMch238IGdu6GxQpJikkAHaLm?w=137&h=204&c=7&r=0&o=5&pid=1.7"', '"https://tse4-mm.cn.bing.net/th/id/OIP-C.mg6oqj6G6gy6jEfkRMuD1wHaE8?w=306&h=204&c=7&r=0&o=5&pid=1.7"', '"https://tse2-mm.cn.bing.net/th/id/OIP-C.JwfQwfrSQAsgfGhsq1DNsgHaLH?w=146&h=204&c=7&r=0&o=5&pid=1.7"', '"https://tse4-mm.cn.bing.net/th/id/OIP-C.-761PIGz7FrKdNsrCLxlagDVEk?w=159&h=204&c=7&r=0&o=5&pid=1.7"', '"https://tse1-mm.cn.bing.net/th/id/OIP-C.dF-qEAjuaHsdvCyVgdKx0gHaHa?w=214&h=204&c=7&r=0&o=5&pid=1.7"'] 25

但是感觉爬的不全，应该还有一种没找到，你可以自己找找

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[已解决]基础爬虫——爬许嵩

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