[英]Scraping all results from page with BeautifulSoup
**Update**
===================================================
好的,到目前為止一切都很好。 我有允許我抓取圖像的代碼,但它以一種奇怪的方式存儲它們。 它首先下載 40 多個圖像,然后在之前創建的“kittens”文件夾中創建另一個“kittens”文件夾並重新開始(下載與第一個文件夾中相同的圖像)。 我怎樣才能改變它? 這是代碼:
from selenium import webdriver
from selenium.webdriver import Chrome
from selenium.common.exceptions import WebDriverException
from bs4 import BeautifulSoup as soup
import requests
import time
import os
image_tags = []
driver = webdriver.Chrome()
driver.get(url='https://www.pexels.com/search/kittens/')
last_height = driver.execute_script('return document.body.scrollHeight')
while True:
driver.execute_script('window.scrollTo(0, document.body.scrollHeight);')
time.sleep(1)
new_height = driver.execute_script('return document.body.scrollHeight')
if new_height == last_height:
break
else:
last_height = new_height
sp = soup(driver.page_source, 'html.parser')
for img_tag in sp.find_all('img'):
image_tags.append(img_tag)
if not os.path.exists('kittens'):
os.makedirs('kittens')
os.chdir('kittens')
x = 0
for image in image_tags:
try:
url = image['src']
source = requests.get(url)
with open('kitten-{}.jpg'.format(x), 'wb') as f:
f.write(requests.get(url).content)
x += 1
except:
pass
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我正在嘗試編寫一個蜘蛛來從某個頁面上抓取小貓的圖像。 我有一個小問題,因為我的蜘蛛只能獲得前 15 張圖像。 我知道這可能是因為頁面在向下滾動后加載了更多圖像。 我該如何解決這個問題? 這是代碼:
import requests
from bs4 import BeautifulSoup as bs
import os
url = 'https://www.pexels.com/search/cute%20kittens/'
page = requests.get(url)
soup = bs(page.text, 'html.parser')
image_tags = soup.findAll('img')
if not os.path.exists('kittens'):
os.makedirs('kittens')
os.chdir('kittens')
x = 0
for image in image_tags:
try:
url = image['src']
source = requests.get(url)
if source.status_code == 200:
with open('kitten-' + str(x) + '.jpg', 'wb') as f:
f.write(requests.get(url).content)
f.close()
x += 1
except:
pass
由於站點是動態的,因此您需要使用瀏覽器操作工具,例如selenium
:
from selenium import webdriver
from bs4 import BeautifulSoup as soup
import time
import os
driver = webdriver.Chrome()
driver.get('https://www.pexels.com/search/cute%20kittens/')
last_height = driver.execute_script("return document.body.scrollHeight")
while True:
driver.execute_script("window.scrollTo(0, document.body.scrollHeight);")
time.sleep(0.5)
new_height = driver.execute_script("return document.body.scrollHeight")
if new_height == last_height:
break
last_height = new_height
image_urls = [i['src'] for i in soup(driver.page_source, 'html.parser').find_all('img')]
if not os.path.exists('kittens'):
os.makedirs('kittens')
os.chdir('kittens')
with open('kittens.txt') as f:
for url in image_urls:
f.write('{}\n'.format(url))
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