how to call user bot in discord python code example

Example 1: discord.py ban

@commands.command() # uses command decorators, in this case inside a cog
@commands.has_permissions(ban_members=True) # only people that have permissions to ban users can use this command
async def ban(self, ctx, user: discord.Member, *, reason): # The person banning someone has to ping the user to ban, and input a reason. Remove self if you are outside a cog.
    await ctx.guild.ban(user, reason=reason) # Bans the user.
    await user.send(f"You have been banned in {ctx.guild} for {reason}") # Private messages user.
    await ctx.send(f"{user} has been successfully banned.") # messages channel to tell everyone it worked

Example 2: python discord bot moderate chat

import discord

class MyClient(discord.Client):

    async def on_ready(self):
        print('Logged on as', self.user)

    async def on_message(self, message):
        word_list = ['cheat', 'cheats', 'hack', 'hacks', 'internal', 'external', 'ddos', 'denial of service']

        # don't respond to ourselves
        if message.author == self.user:
            return

        messageContent = message.content
        if len(messageContent) > 0:
            for word in word_list:
                if word in messageContent:
                    await message.delete()
                    await message.channel.send('Do not say that!')
            
        messageattachments = message.attachments
        if len(messageattachments) > 0:
            for attachment in messageattachments:
                if attachment.filename.endswith(".dll"):
                    await message.delete()
                    await message.channel.send("No DLL's allowed!")
                elif attachment.filename.endswith('.exe'):
                    await message.delete()
                    await message.channel.send("No EXE's allowed!")
                else:
                    break

client = MyClient()
client.run('token here')