如何限制对Python simplehttpserver的特定目录访问

import os
import sys
from http.server import SimpleHTTPRequestHandler
from socketserver import TCPServer

class CustomRequestHandler(SimpleHTTPRequestHandler):
    def translate_path(self, path):
        # 获取请求的目录路径
        full_path = super().translate_path(path)
        
        # 检查目录路径是否在允许访问的范围内
        allowed_dirs = ['/path/to/allowed_dir1', '/path/to/allowed_dir2']
        if not any(full_path.startswith(allowed_dir) for allowed_dir in allowed_dirs):
            # 如果目录路径不在允许访问的范围内，返回403 Forbidden错误
            self.send_error(403, "Forbidden")
            return None
        
        return full_path

def run_server():
    try:
        server_address = ('', 8000)  # 设置服务器地址和端口
        httpd = TCPServer(server_address, CustomRequestHandler)
        print('Server started on port 8000...')
        httpd.serve_forever()
    except KeyboardInterrupt:
        print('Server stopped.')

if __name__ == '__main__':
    run_server()