如何在discord.py中获取来自文本通道的所有消息的数组？

import discord

client = discord.Client()

@client.event
async def on_ready():
    print('Bot is ready')

@client.event
async def on_message(message):
    if message.channel.type == discord.ChannelType.text:
        channel_messages = await message.channel.history(limit=None).flatten()
        # channel_messages是一个包含所有消息的数组
        for msg in channel_messages:
            print(msg.content)

client.run('YOUR_BOT_TOKEN')

pip install discord.py