代理配置在 Python 中不起作用

Question

我正在尝试在进行网络抓取时轮换我的 IP，但是当我检查 IP 时它似乎不起作用，因为我执行此过程总是相同的。下面是我正在使用的代码：

代码：

import requests
from bs4 import BeautifulSoup
import random

headers = {'User-Agent': 'Mozilla/5.0 (Linux; Android 5.1.1; SM-G928X Build/LMY47X) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.83 Mobile Safari/537.36'}

def get_free_proxies():
    url = "https://free-proxy-list.net/"
    # get the HTTP response and construct soup object
    soup = BeautifulSoup(requests.get(url).content, "html.parser")
    proxies = list()
    for row in soup.find("table", attrs={"id": "proxylisttable"}).find_all("tr")[1:]:
        tds = row.find_all("td")
        try:
            ip = tds[0].text.strip()
            port = tds[1].text.strip()
            host = f"{ip}:{port}"
            proxies.append(host)
        except IndexError:
            continue
    return proxies

def get_session(proxies):
    #Construct an HTTP session
    session = requests.Session()
    #choose one random proxy
    proxy = random.choice(proxies)
    session.proxies = {"http": proxy, "https": proxy}
    #session.proxies.update(proxy)
    return session

proxies = get_free_proxies()

for i in range(5):
    session = get_session(proxies)
    
    print("Request page with IP:", session.get("http://icanhazip.com",timeout=1.5).text.strip())
    

而且输出的始终是同一个IP，没有更新，顺便说一下是我的电脑IP

有谁知道失败的原因吗？

谢谢大家

Answer 1

也许你已经设置了环境变量http_proxy，并且在发送请求时，使用了这个变量中指定的代理。要更改此行为，您只需在创建会话时将属性 trust_env 设置为 False

def get_session(proxies):
    #Construct an HTTP session
    session = requests.Session()
    #choose one random proxy
    proxy = random.choice(proxies)
    session.proxies = {"http": proxy, "https": proxy}
    session.trust_env = False
    return session