Python3.x爬虫下载网页图片的实例讲解

url=https://pixabay.com/

re.compile(r'^https://cdn.pixabay.com/photo/.*?jpg$') 

#-*- coding:utf-8 -*-import reimport requestsimport osfrom bs4 import BeautifulSoupurl = 'https://pixabay.com/'html = requests.get(url).text #获取网页内容print(html)# 这里由于有些图片可能存在网址打不开的情况，加个5秒超时控制。#data-objurl="http://pic38.nipic.com/20140218/17995031_091821599000_2.jpg"获取这种类型链接soup = BeautifulSoup(html,'html.parser',from_encoding='utf-8')#^abc.*?qwe$pic_url = soup.find_all('img',src=re.compile(r'^https://cdn.pixabay.com/photo/.*?jpg$'))#pic_url = pic_node.get_text()#pic_url = re.findall('"https://cdn.pixabay.com/photo/""(.*?)",',html,re.S)print(pic_url)i = 0#判断image文件夹是否存在，不存在则创建if not os.path.exists('image'): os.makedirs('image')for url in pic_url: img = url['src'] try: pic = requests.get(img,timeout=5) #超时异常判断 5秒超时 except requests.exceptions.ConnectionError: print('当前图片无法下载') continue file_name = "image/"+str(i)+".jpg" #拼接图片名 print(file_name) #将图片存入本地 fp = open(file_name,'wb') fp.write(pic.content) #写入图片 fp.close() i+=1