我正在使用 python 创建一个应用程序，它将显示从 DuckDuckGo 的图像搜索结果中抓取的图像。因此，我需要根据搜索获取指向图像的链接列表。问题是构成 DuckDuckGo 的图像搜索结果的 HTML 不包含任何图像标签，而是图像似乎存储在部门标签中。如何在 python 的帮助下抓取那些该死的图像链接并将它们存储在我程序的变量中？
我希望我的变量看起来像什么:
image_links = ["https://duckduckgo.com/?q=duckduckgo&atb=v166-4_p&iax=images&ia=images&iai=https%3A%2F%2Fupload.wikimedia.org%2Fwikipedia%2Fen%2Fthumb%2F8%2F88%2FDuckDuckGo_logo.svg%2F1200px-DuckDuckGo_logo.svg.png","https://duckduckgo.com/?q=duckduckgo&atb=v166-4_p&iax=images&ia=images&iai=https%3A%2F%2Fupload.wikimedia.org%2Fwikipedia%2Fen%2Fthumb%2F8%2F88%2FDuckDuckGo_logo.svg%2F1200px-DuckDuckGo_logo.svg.png"]
A visualization of DuckDuckGo's HTML structure in its image search results
编辑:
当我通过这样做从 URL 中抓取 HTML 时:
source = urllib.request.urlopen("https://duckduckgo.com/?q=duckduckgo&atb=v166-4_p&iax=images&ia=images").read()
它根本不返回任何图像标签。
我正在通过这样做来检查:
source_tree = BeautifulSoup(source, 'html.parser')
links = [img.get('src') for img in source_tree.find_all('img', _class='tile--img__img')]
print(f"links: {links}")
print(f"img in source_tree: {'img' in str(source_tree)}")
print(f"source_tree: {source_tree}")
输出:
links: []
img in source_tree: False
source_tree: <!DOCTYPE html>
<html class="no-js has-zcm" lang="en_US"><head><meta content="text/html; charset=utf-8" http-equiv="content-type"/><title>duckduckgo at DuckDuckGo</title><link href="/s1775.css" rel="stylesheet" type="text/css"/><link href="/r1775.css" rel="stylesheet" type="text/css"/><meta content="noindex,nofollow" name="robots"/><meta content="origin" name="referrer"/><meta content="duckduckgo" name="apple-mobile-web-app-title"/><link href="/favicon.ico" rel="shortcut icon" sizes="16x16 24x24 32x32 64x64" type="image/x-icon"><link href="/assets/icons/meta/DDG-iOS-icon_60x60.png?v=2" id="icon60" rel="apple-touch-icon"><link href="/assets/icons/meta/DDG-iOS-icon_76x76.png?v=2" id="icon76" rel="apple-touch-icon" sizes="76x76"/><link href="/assets/icons/meta/DDG-iOS-icon_120x120.png?v=2" id="icon120" rel="apple-touch-icon" sizes="120x120"/><link href="/assets/icons/meta/DDG-iOS-icon_152x152.png?v=2" id="icon152" rel="apple-touch-icon" sizes="152x152"/><link 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这是什么原因，我该如何解决？
最佳答案
由于duckduckgo 没有提供任何用于图像搜索的API，但它确实使用请求调用来获取图像。
所以我得到了另一个可能有效的解决方案。
在这里，此解决方案仅适用于 keyword = book。因为图片搜索请求使用的是参数vqd，该参数是根据搜索到的关键字或用户机器的动态eiter。
如果可以解决此代码，则此代码将适用于任何关键字以下载任何图像。
如果有人可以解密这个 vqd，只需替换:
'q': 'book',
与
'q': keyword,
其余的都很好。
from bs4 import *
import requests as rq
import os
# api-endpoint
URL = "https://duckduckgo.com/i.js"
keyword = input('Enter the search keyword : ')
# defining a params dict for the parameters to be sent to the API
PARAMS = {'l': 'us-en',
'o': 'json',
'q': 'book',
'vqd': '3-160127109499719016074744569811997028386-179481262599639828155814625357171050706&f=,,,',
}
# sending get request and saving the response as response object
r = rq.get(url=URL, params=PARAMS)
# extracting data in json format
data = r.json()
img_link = data["results"][0]['image']
img_data = rq.get(img_link).content
# os.mkdir('downloads')
filename = "downloads/" + keyword + ".png"
with open(filename, 'wb+') as f:
f.write(img_data)
print("File " + keyword + ".png successfully downloaded.")
==========================更新答案 ============= =============
还有一个 github package 可用于此。
上述脚本的主要问题是该参数 (vqd) 的值。
在这个包的帮助下，我创建了以下脚本。
import requests
import re
import json
import os
def search(keywords, max_results=None):
url = 'https://duckduckgo.com/'
params = {
'q': keywords
}
print("Hitting DuckDuckGo for Token")
# First make a request to above URL, and parse out the 'vqd'
# This is a special token, which should be used in the subsequent request
res = requests.post(url, data=params)
searchObj = re.search(r'vqd=([\d-]+)\&', res.text, re.M | re.I)
if not searchObj:
print("Token Parsing Failed !")
return -1
print("Obtained Token")
headers = {
'dnt': '1',
'accept-encoding': 'gzip, deflate, sdch, br',
'x-requested-with': 'XMLHttpRequest',
'accept-language': 'en-GB,en-US;q=0.8,en;q=0.6,ms;q=0.4',
'user-agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36',
'accept': 'application/json, text/javascript, */*; q=0.01',
'referer': 'https://duckduckgo.com/',
'authority': 'duckduckgo.com',
}
params = (
('l', 'wt-wt'),
('o', 'json'),
('q', keywords),
('vqd', searchObj.group(1)),
('f', ',,,'),
('p', '2')
)
requestUrl = url + "i.js"
try:
res = requests.get(requestUrl, headers=headers, params=params)
data = json.loads(res.text)
saveImage(data["results"], keywords)
except ValueError as e:
print('Please try later.')
# logger.debug("Hitting Url Success : %s", requestUrl)
def saveImage(objs, keyword):
for obj in objs:
img_link = obj['image']
img_data = requests.get(img_link).content
# os.mkdir('downloads')
filename = "downloads/" + keyword + ".png"
with open(filename, 'wb+') as f:
f.write(img_data)
print("File " + keyword + ".png successfully downloaded.")
break
while True:
keyword = input('Enter the search keyword : ')
# print(keyword)
search(keyword)
关于python-3.x - 如何在 Python 中从 DuckDuckGo 的图像搜索结果中抓取图像，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/56132631/