学会python爬虫，这简直就是二次元宅男的福利

目标网站 https://divnil.com

1、先去主页面获取每个图片的详细页面的链接

这链接还是比较好获取的，直接 F12 审核元素，或者右键查看代码，手机上chrome和firefox在url前面加上 “view-source”

比如：

view-source:https://www.baidu.com/

2、从详细页面获取图片大图地址
随便打开一个图片详细页面，接着按 F12 审核元素，我们需要定位该图片的链接，首先单击左上角的这玩意儿，像一个鼠标的图标，接着只需要单击网页上的图片就能定位到代码了：

3、用大图地址下载该图片

这个很简单，看代码
先安装 Requests 和 BeautifulSoup 库

pip install requests bs4

导入库

import requestsfrom bs4 import BeautifulSoupimport sys

请求获取网页源代码

url = "https://divnil.com/wallpaper/iphone8/%E3%82%A2%E3%83%8B%E3%83%A1%E3%81%AE%E5%A3%81%E7%B4%99_2.html"
headers = {
"User-Agent": "Mozilla/5.0 (X11; Linux x86_64; rv:58.0) Gecko/20100101 Firefox/58.0",
}
resp = requests.get(url, headers=headers)
if resp.status_code != requests.codes.OK:
print("Request Error, Code: %d"% resp.status_code)
sys.exit()

然后解析出所有图片的详细地址

soup = BeautifulSoup(resp.text, "html.parser")
contents = soup.findAll("div", id="contents")[0]
wallpapers = contents.findAll("a", rel="wallpaper")
links = []
for wallpaper in wallpapers:
 links.append(wallpaper['href'])

接着在详细网页里获取那个看似高清的图片的不确定是否为真实图片链接并下载(/滑稽)

import os

head = "https://divnil.com/wallpaper/iphone8/"
if os.path.exists("./Divnil") != True:
 os.mkdir("./Divnil")

for url in links:
 url = head + url
 resp = requests.get(url, headers=headers)
 if  resp.status_code != requests.codes.OK:
   print("URL: %s REQUESTS ERROR. CODE: %d" % (url, resp.status_code))
   continue
 soup = BeautifulSoup(resp.text, "html.parser")
 img =  soup.find("div", id="contents").contents.find("img", id="main_content")
 img_url = head + img['"original'].replace("../", "")
 img_name = img['alt']
 print("start download %s ..." % img_url)

 resp = requests.get(img_url, headers=headers)
 if resp.status_code != requests.codes.OK:
   print("IMAGE %s DOWNLOAD FAILED." % img_name)

 with open("./Divnil/" + img_name + ".jpg", "wb") as f:
   f.write(resp.content)

贴上所有代码

import requests
from bs4 import BeautifulSoup
import sys
import os
'''
更多Python学习资料以及源码教程资料，可以在群821460695 免费获取
'''

class Divnil:

   def __init__(self):
       self.url = "https://divnil.com/wallpaper/iphone8/%E3%82%A2%E3%83%8B%E3%83%A1%E3%81%AE%E5%A3%81%E7%B4%99.html"
       self.head = "https://divnil.com/wallpaper/iphone8/"
       self.headers = {
           "User-Agent": "Mozilla/5.0 (X11; Linux x86_64; rv:58.0) Gecko/20100101 Firefox/58.0",
       }


   def getImageInfoUrl(self):

       resp = requests.get(self.url, headers=self.headers)
       if resp.status_code != requests.codes.OK:
           print("Request Error, Code: %d"% resp.status_code)
           sys.exit()

       soup = BeautifulSoup(resp.text, "html.parser")

       contents = soup.find("div", id="contents")
       wallpapers = contents.findAll("a", rel="wallpaper")

       self.links = []
       for wallpaper in wallpapers:
           self.links.append(wallpaper['href'])


   def downloadImage(self):

       if os.path.exists("./Divnil") != True:
           os.mkdir("./Divnil")

       for url in self.links:

           url = self.head + url

           resp = requests.get(url, headers=self.headers)
           if  resp.status_code != requests.codes.OK:
               print("URL: %s REQUESTS ERROR. CODE: %d" % (url, resp.status_code))
               continue

           soup = BeautifulSoup(resp.text, "html.parser")

           img = soup.find("div", id="contents").find("img", id="main_content")
           img_url = self.head + img['original'].replace("../", "")
           img_name = img['alt']

           print("start download %s ..." % img_url)

           resp = requests.get(img_url, headers=self.headers)
           if resp.status_code != requests.codes.OK:
               print("IMAGE %s DOWNLOAD FAILED." % img_name)
               continue

           if '/' in img_name:
               img_name = img_name.split('/')[1]

           with open("./Divnil/" + img_name + ".jpg", "wb") as f:
               f.write(resp.content)


   def main(self):
       self.getImageInfoUrl()
       self.downloadImage()


if __name__ == "__main__":
   divnil = Divnil()
   divnil.main()