如何从url中获取文件，然后像读取本地文件一样读取它？

import requests

def read_file_from_url(url):
    response = requests.get(url)
    if response.status_code == 200:
        # 文本文件
        if response.headers.get('content-type').startswith('text'):
            file_content = response.text
            # 对文件内容进行处理
            # ...
        # 二进制文件
        else:
            file_content = response.content
            # 将文件内容保存到本地文件
            with open('file.txt', 'wb') as file:
                file.write(file_content)
    else:
        print('Failed to retrieve file from URL.')

# 调用函数并传入URL
read_file_from_url('https://example.com/file.txt')