如何在python中获取discord的速率限制头部？

import discord

# 创建一个Discord客户端
client = discord.Client()

@client.event
async def on_ready():
    print('已登录为 {0.user}'.format(client))

@client.event
async def on_message(message):
    if message.content.startswith('!test'):
        try:
            # 发送一个测试请求到Discord API
            await client.http.get('https://discord.com/api/v10/gateway')
        except discord.HTTPException as e:
            # 获取速率限制头部信息
            headers = e.response.headers
            rate_limit = headers.get('X-RateLimit-Limit')
            remaining = headers.get('X-RateLimit-Remaining')
            reset = headers.get('X-RateLimit-Reset')

            print('速率限制信息:')
            print('限制次数:', rate_limit)
            print('剩余次数:', remaining)
            print('重置时间:', reset)

# 运行Discord客户端
client.run('YOUR_DISCORD_TOKEN')