python3 模拟登录v2ex实例讲解

# coding=utf-8 import requests from bs4 import BeautifulSoupheaders = { 'user-agent': 'Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.87 Safari/537.36', 'origin': 'https://www.v2ex.com', 'referer': 'https://www.v2ex.com/signin', 'host': 'www.v2ex.com', } s = requests.Session() r = s.get('https://www.v2ex.com/signin', headers=headers) soup = BeautifulSoup(r.content, "html.parser")#获取登录数据once = soup.find('input', {'name': 'once'})['value']name = soup.find('input', {'type': 'text', 'class': 'sl'})['name']password = soup.find('input', {'type': 'password', 'class': 'sl'})['name']login_data = {name : 'xxx',password : 'xxx','once' : once,'next' : '/'}#登录 s.post('https://www.v2ex.com/signin', login_data, headers=headers)