Can you write a simple Discord Bot in python that replies with hello world?
user
Yes, here is a simple code snippet that creates a Discord bot in Python and makes it reply with "Hello, world!" in response to any message:

```python
import discord

client = discord.Client()

@client.event
async def on_ready():
    print('Logged in as {0.user}'.format(client))

@client.event
async def on_message(message):
    if message.author == client.user:
        return

    if message.content.startswith('!hello'):
        await message.channel.send('Hello, world!')

client.run('your_bot_token_here')
```

You will need to replace "your_bot_token_here" with your own Discord bot token. You can obtain a bot token by creating a new bot application on the Discord Developer Portal.
assistant
Instead of hello world, modify the code so that the Discord Bot says hello to the user that messaged it, using their username but not their discord tag.
user
Could you write webscraper in Python to grab the pdf of NIST?
assistant
Can you make me an essay about why kibble is bad for dogs.
user