你好，我尝试了很多命令来修复它，但是机器人什么也没做。这是我的代码。该文件是bot.py

import discord
import os 
from discord.ext import commands

class MyClient(discord.Client):
    async def on_ready(self):
        print('Logged on as {0}!'.format(self.user))

    async def on_message(self, message):
        print('Message from {0.author}: {0.content}'.format(message))

client = MyClient()

@client.event
async def on_ready():
    print(f'{client.user.name} Test!')

############### 

bot = commands.Bot(command_prefix="!")
@bot.event
async def on_guild_join(guild):
    if guild.system_channel:
        await guild.system_channel.send("Test")

# @client.event

# async def on_member_join(member):

# await ctx.author.send("Welcome!")

## *@client.event

# async def on_member_join(member):

# await member.create_dm()

# await member.send(

# f'Hallo{member.name}, Willkommen'

# )

为什么不起作用？我尝试了很多命令/模型。我用记事本++来编程。给它一个比用python编程更好的程序？也许对初学者来说是什么？