使用Python如何登录受保护的网站

import requests
from bs4 import BeautifulSoup

login_url = "https://example.com/login"  # 替换为目标网站的登录页面URL
username = "your_username"  # 替换为登录账号
password = "your_password"  # 替换为登录密码

session = requests.Session()
login_page = session.get(login_url)
soup = BeautifulSoup(login_page.content, "html.parser")

# 提取登录所需的表单数据
csrf_token = soup.find("input", {"name": "csrf_token"})["value"]
data = {
    "username": username,
    "password": password,
    "csrf_token": csrf_token
}

# 发送登录请求
response = session.post(login_url, data=data)

# 检查登录是否成功
if response.status_code == 200:
    print("登录成功！")
else:
    print("登录失败！")