Python爬取站长之家图片(正则表达式)
1.导入爬虫请求库
import requests
import re
import os
2.创建本地存放下载图片的文件夹
download = "pic"
# 若已经创建，则调用；若没有，则创建
if not os.path.exists(download):
os.mkdir(download)
3.请求的网址
url = "https://sc.chinaz.com/tupian/shanshuifengjing.html"
4.使用requests向url发请求,response接收响应
response = requests.get(url)
5.编写正则
pattern = r'<img src2="(.*)" alt=".*">'
imgUrlList = re.findall(pattern,response.content.decode('utf-8'))
6.遍历每一张图片的路径
i=1
for imgUrl in imgUrlList:
7.向每一个图片发请求，响应为每个图片的二进制内容
with open("{}/{}.jpg".format(download,i),'wb') as file:
8.将图片的二进制内容写入到本地生成文件
file.write( requests.get("https:"+imgUrl).content )
print("第{}张图片下载完成".format(i))
i+=1
附件：完整代码
#导入爬虫请求库
import requests
import re
import os
# 本地创建存放图片的文件夹
download = "pic"
if not os.path.exists(download):
os.mkdir(download)
# 请求的网址
url = "https://sc.chinaz.com/tupian/shanshuifengjing.html"
# 使用requests向url发请求,response接收响应
response = requests.get(url)
# 编写正则表达式
pattern = r'<img src2="(.*)" alt=".*">'
imgUrlList = re.findall(pattern,response.content.decode('utf-8'))
# 遍历每一张图片的路径
i=1
for imgUrl in imgUrlList:
# 向每一个图片发请求，响应为每个图片的二进制内容
with open("{}/{}.jpg".format(download,i),'wb') as file:
# 将图片的二进制内容写入到本地生成文件
file.write( requests.get("https:"+imgUrl).content )
print("第{}张图片下载完成".format(i))
i+=1
