详解Python爬虫使用代理proxy抓取网页方法

proxy="http://127.0.0.1:80"
# 创建一个ProxyHandler对象
proxy_support=urllib.request.ProxyHandler({'http':proxy})
# 创建一个opener对象
opener = urllib.request.build_opener(proxy_support)
# 给request装载opener
urllib.request.install_opener(opener)
# 打开一个url
r = urllib.request.urlopen('http://youtube.com',timeout = 500)

import requests
proxies = {
  "http": "http://127.0.0.1:3128",
  "https": "http://127.0.0.1:2080",
}
r=requests.get("http://youtube.com", proxies=proxies)
print r.text

export HTTP_PROXY="http://127.0.0.1:3128"
export HTTPS_PROXY="http://127.0.0.1:2080"
python
>>> import requests
>>> r=requests.get("http://youtube.com")
>>> print r.text

proxies = {
    "http": "http://user:pass@127.0.0.1:3128/",
}