requests库使用方式

import requests
requests = requests.session()
headers = {    'User-Agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:57.0) Gecko/20100101 Firefox/57.0'}
url = "http://httpbin.org"response = requests.get(url, headers=headers, timeout=None)
print(response.text)
print(response.cookies)
print(response.content)
print(response.content.decode("utf-8"))
print(respone.json())

data = {    "name":"zhaofan",    "age":23
}
response = requests.post("http://httpbin.org/post",data=data)
print(response.text)

import requestsfrom requests.packages import urllib3
urllib3.disable_warnings()
response = requests.get("https://www.12306.cn",verify=False)
print(response.status_code)

import requests

proxies= {    "http":"http://127.0.0.1:9999",    "https":"http://127.0.0.1:8888"}
response  = requests.get("https://www.baidu.com",proxies=proxies)
print(response.text)

如果代理需要设置账户名和密码,只需要将字典更改为如下：
proxies = {"http":"http://user:password@127.0.0.1:9999"}
如果你的代理是通过sokces这种方式则需要pip install "requests[socks]"proxies= {"http":"socks5://127.0.0.1:9999","https":"sockes5://127.0.0.1:8888"}

没有超时时间，一直等待
timeout=None

import requestsfrom requests.exceptions import ReadTimeout,ConnectionError,RequestExceptiontry:
    response = requests.get("http://httpbin.org/get",timout=0.1)
    print(response.status_code)except ReadTimeout:
    print("timeout")except ConnectionError:
    print("connection Error")except RequestException:
    print("error")