您好,登錄后才能下訂單哦!
在Web爬蟲反爬蟲策略應(yīng)對(duì)中,Python庫(kù)函數(shù)可以幫助我們實(shí)現(xiàn)各種策略,以下是一些常見的庫(kù)和函數(shù):
import requests
headers = {
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.3"
}
url = "https://example.com"
response = requests.get(url, headers=headers)
from bs4 import BeautifulSoup
soup = BeautifulSoup(response.text, "html.parser")
title = soup.title.string
from selenium import webdriver
driver = webdriver.Chrome()
driver.get(url)
# 等待JavaScript加載完成
time.sleep(5)
# 使用BeautifulSoup解析頁面內(nèi)容
soup = BeautifulSoup(driver.page_source, "html.parser")
title = soup.title.string
driver.quit()
free-proxy
、proxybroker
等。同時(shí),我們還可以構(gòu)建自己的代理池來管理和維護(hù)代理IP。import requests
from fake_useragent import UserAgent
from proxybroker import Broker
proxies = []
def collect_proxies():
broker = Broker(max_conn=10, max_tries=3, timeout=10)
for proxy in broker.find(types=['HTTP', 'HTTPS'], countries=['US', 'CA']):
proxies.append(proxy)
collect_proxies()
ua = UserAgent()
headers = {"User-Agent": ua.random}
for proxy in proxies:
try:
response = requests.get(url, headers=headers, proxies={"http": proxy}, timeout=10)
if response.status_code == 200:
print("Successfully accessed the website using proxy:", proxy)
break
except Exception as e:
print("Failed to access the website using proxy:", proxy)
time.sleep()
函數(shù)實(shí)現(xiàn)。import time
time.sleep(5) # 等待5秒
通過以上方法,我們可以在Web爬蟲反爬蟲策略應(yīng)對(duì)中使用Python庫(kù)函數(shù)來實(shí)現(xiàn)各種策略,提高爬蟲的成功率。
免責(zé)聲明:本站發(fā)布的內(nèi)容(圖片、視頻和文字)以原創(chuàng)、轉(zhuǎn)載和分享為主,文章觀點(diǎn)不代表本網(wǎng)站立場(chǎng),如果涉及侵權(quán)請(qǐng)聯(lián)系站長(zhǎng)郵箱:is@yisu.com進(jìn)行舉報(bào),并提供相關(guān)證據(jù),一經(jīng)查實(shí),將立刻刪除涉嫌侵權(quán)內(nèi)容。