Scraping google images with python

问题

I'm trying to learn python scraping and came across a program to scrape a set number of images from google image search results

I changed it to go for 5 images, it was working for a while but it stopped working recently with showing outputs such as there are 0 images

import requests
import re
import urllib2
import os
import cookielib
import json

def get_soup(url,header):
    return BeautifulSoup(urllib2.urlopen(urllib2.Request(url,headers=header)),'html.parser')


query = raw_input("query image")# you can change the query for the image  here
image_type="ActiOn"
query= query.split()
query='+'.join(query)
url="https://www.google.com/search?q="+query+"&source=lnms&tbm=isch"
print url
#add the directory for your image here
DIR="C:\Users\mynam\Desktop\WB"
header={'User-Agent':"Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.134 Safari/537.36"
}
soup = get_soup(url,header)


ActualImages=[]# contains the link for Large original images, type of  image
for a in soup.find_all("div",{"class":"rg_meta"}):
    link , Type =json.loads(a.text)["ou"]  ,json.loads(a.text)["ity"]
    ActualImages.append((link,Type))

print  "there are total" , len(ActualImages),"images"

if not os.path.exists(DIR):
            os.mkdir(DIR)
DIR = os.path.join(DIR, query.split()[0])

if not os.path.exists(DIR):
            os.mkdir(DIR)
###print images
for i , (img , Type) in enumerate(ActualImages[0:5]):
    try:
        req = urllib2.Request(img, headers={'User-Agent' : header})
        raw_img = urllib2.urlopen(req).read()

        cntr = len([i for i in os.listdir(DIR) if image_type in i]) + 1
        print cntr
        if len(Type)==0:
            f = open(os.path.join(DIR , image_type + "_"+ str(cntr)+".jpg"), 'wb')
        else :
            f = open(os.path.join(DIR , image_type + "_"+ str(cntr)+"."+Type), 'wb')


        f.write(raw_img)
        f.close()
    except Exception as e:
        print "could not load : "+img
        print e

There are no error logs, the file gets created and it is empty. The ActualImages array remains empty for some reason.

回答1:

it seems that Google has recently removed the metadata from the image search result, i.e. you won't find rg_meta in the HTML. Therefore, soup.find_all("div",{"class":"rg_meta"}): will not return anything.

I haven't found a solution for this. I believe Google made this change for the very purpose of preventing scrapping.

来源：https://stackoverflow.com/questions/60095629/scraping-google-images-with-python