使用python从Google搜索中抓取图片

Question

I am trying to write a script in python in order to crawl images from google search. I want to track the urls of images and after that store those images to my computer. I found a code to do so. However it only track 60 urls. Afterthat a timeout message appears. Is it possible to track more than 60 images? My code:

def crawl_images(query, path):

    BASE_URL = 'https://ajax.googleapis.com/ajax/services/search/images?'\
         'v=1.0&q=' + query + '&start=%d'

    BASE_PATH = os.path.join(path, query)

    if not os.path.exists(BASE_PATH):
        os.makedirs(BASE_PATH)

    counter = 1
    urls = []
    start = 0 # Google's start query string parameter for pagination.
    while start < 60: # Google will only return a max of 56 results.
        r = requests.get(BASE_URL % start)
        for image_info in json.loads(r.text)['responseData']['results']:
            url = image_info['unescapedUrl']
            print url
            urls.append(url)
            image = urllib.URLopener()

            try:
                image.retrieve(url,"model runway/image_"+str(counter)+".jpg")   
                counter +=1
            except IOError, e:
                # Throw away some gifs...blegh.
                print 'could not save %s' % url
                continue

        print start
        start += 4 # 4 images per page.
        time.sleep(1.5)

crawl_images('model runway', '')

Answer 1

Have a look at the Documentation: https://developers.google.com/image-search/v1/jsondevguide

You should get up to 64 results:

Note: The Image Searcher supports a maximum of 8 result pages. When combined with subsequent requests, a maximum total of 64 results are available. It is not possible to request more than 64 results.

Another note: You can restrict the file type, this way you dont need to ignore gifs etc.

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And as an additional Note, please keep in mind that this API should only be used for user operations and not for automated searches!

Note: The Google Image Search API must be used for user-generated searches. Automated or batched queries of any kind are strictly prohibited.

Answer 2

You can try the icrawler package. Extremely easy to use. I've never had problems with the number of images to be downloaded.