使用Python从internet获取需要web登录的文件

import requests
from bs4 import BeautifulSoup

# 模拟登录
login_url = 'https://example.com/login'
file_url = 'https://example.com/files/file.pdf'
username = 'your_username'
password = 'your_password'

# 创建session对象，自动管理Cookie
session = requests.Session()

# 发送登录请求
login_data = {
    'username': username,
    'password': password
}
response = session.post(login_url, data=login_data)

# 检查登录是否成功
if response.status_code == 200:
    # 访问需要登录的文件
    file_response = session.get(file_url)

    # 保存文件到本地
    with open('file.pdf', 'wb') as file:
        file.write(file_response.content)
        print('文件下载完成')
else:
    print('登录失败')