如何从chat_id中检索用户名？

import requests

def get_username_from_chat_id(chat_id):
    # Telegram Bot API请求URL
    url = f"https://api.telegram.org/bot<YOUR_BOT_TOKEN>/getChatMember?chat_id={chat_id}&user_id={chat_id}"
    
    try:
        response = requests.get(url)
        data = response.json()
        
        if data["ok"]:
            username = data["result"]["user"]["username"]
            return username
        else:
            return "无法找到用户名"
    except requests.exceptions.RequestException as e:
        return "请求出错：" + str(e)

# 示例用法
chat_id = "<YOUR_CHAT_ID>"
username = get_username_from_chat_id(chat_id)
print("用户名：", username)