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How to Make A Discord Bot - Part 2 (Updated 2021)
FishballNooodle (183)

Ok, so assuming you've already read Part 1 of my Tutorial Series, let's get straight into the good stuff!
Discord Rewrite Branch uses the async/await method, for those of you who don't know, you will understand it later.

By the way, I'm using repl.it so I won't explain how to install Discord on your computer.

Import Modules

Firstly, let's import the discord modules into python. We will be importing 2 modules, which is enough to last you till quite an advanced level. The 2 modules are namely:
discord
commands from discord.ext
To import, copy and paste this:

import discord
from discord.ext import commands

Token

I previously used the token to string method which is unsafe.
We will be using Secrets that Replit has integrated into all repls.
Set the key name to bot_token and the value to the copied string. (Should be a string of random characters)

Defining Bot Object

Most of the code will heavily rely on this. To define your bot, we will be using the Bot function from the commands module. It will take in one main parameter which is the bot prefix. A bot prefix is a character you have to type before the actual command for it to work, for example:

In Discord:


As shown in the picture, the bot only responded when I had the | symbol.
To code this, copy and paste this:
client = commands.Bot(command_prefix = "|")

Do note that you can change the prefix to anything you like, as long as there are no spaces

Programming the On-Ready Event

Your bot is almost about to go online, the last step is to get the bot to print out a message when it successfully goes online and to also add an activity it's doing like this...

This is called an event, an Discord has a built-in function just for what we want to do.
The code below will explain what each step does:

#This is a Decorator, something used to give more information about a function
@client.event

#This is normally how you define a function in python, just that we added an async to it
#on_ready is the built-in function that will tell us when the bot is successfully online
async def on_ready():

  #Remember client is the bot, presence is the activity shown in Discord
  #Note how we used await to complete the async/await method
  await client.change_presence(activity=discord.Game(name="|help"))

  #We will then log it to our python console when it's online
  print("Moderation Bot Online and Running")

Lastly, Don't Forget to at the run command to get your bot online and working
client.run(token)
Now if you hit the run button, it should start installing the relevant lock files.
Once you see it says "Moderation Bot Online and Running" you know you have successfully made a bot.
But what is a bot without a command? Let's make 1 Simple command to show the ping of the user. The ping is the latency between the transmission of data between the server and the user. It is usually measured in milliseconds(ms) but Discord measures it in seconds(s) - weird.
Here's the code:

#Note how we used a command decorator instead of an event since this is a command not an event
@client.command()

#Note that the name of the function will be the name of the command you will have to type in discord
#We are also passing in ctx as a parameter in this function
#You can think of ctx (read as context) as the overview story of the command, the story starts where the user enters the command
#ctx stores millions of useful information inside it, for example, username, channel the message was sent it, userid
async def ping(ctx):

  #ctx is also used to send back stuff to Discord
  await ctx.send("Pong! {}ms".format(round(client.latency * 1000))
  #As you can see we rounded the latency *1000 since it was originally in seconds

Oh my, it surely has been a long Tutorial hope you enjoyed it, stay tuned for the next one:)
If you encountered any problems along the way, feel free to voice it out in the comments section below.

Comments
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HarshVardhan19 (16)

This can be very wrong way to put tokens if the bot is being hosted on repl.it, because, most of us do not pay, and we keep our projects public. So putting the token in the way you showed, it would possibly lead to a token leak. The better practice when writing a discord.py bot on repl.it is putting the token in a .env file. Then you'll have to import os at the top of your file, assuming you wrote this in the .env file:
TOKEN=your_token
Remember, there are no spaces, quotes or double-quotes in the .env file
Now the token is stored in .env file with the name TOKEN. You'll just have to grab it in the main.py file using token = os.environ.get("TOKEN")
Use it exactly as I showed, the token is now stored in the main.py file's token variable, now even if the main.py file is public, you will never find any token in it, just a simply os.environ.get("TOKEN"). The .env file however, will not be visible to anyone else except the people you give editing permissions.

FishballNooodle (183)

@HarshVardhan19
can we report this guy, he just literally used me as an advertising space.
You only have 0 upvotes you have no rights to just steal my viewers through my posts comments.

HarshVardhan19 (16)

@FishballNooodle alright im sorry for that, im extremely sorry if you felt offended by that, but, please try to show me if you can see my bot's tokens in my pinned repls

HarshVardhan19 (16)

@FishballNooodle and no, i didnt mean .Env, I meant .env
there is a difference.
once again im sorry, i didnt want you to feel offended in any way.

HarshVardhan19 (16)

@FishballNooodle also, you should know you're giving away partial knowledge to people through this way of putting token on repl.it, if the projects of the people who use this method gets discovered by other people, it will most probably lead to a token leak, which can be extremely disastrous for their servers if the bot has permissions in them. And I'm fairly certain you weren't aware of that were you?

FishballNooodle (183)

@HarshVardhan19
if you didn't see the comments below, I already discussed that withe the other replers

HarshVardhan19 (16)

@FishballNooodle you mean bout trinket or stuff, I'm sorry I don't have any idea what's trinket, I did a google search on it few hours ago, but it just got me more confused. But I was talking bout the bots hosted here, on repl.it. People who write and host their bots on repl.it with the free plan, should be encouraged to use .env files because leaking authorization tokens is obviously not a very good coding practice.

NewCoder103 (0)

cmon how does the client.run(token) work
i cant get it to work

EmiratesPTFS (1)

@NewCoder103 u have to do client.run('put your token here')

example:
client.run('asdawdasdwadaw3289es2d29d2829')

[deleted]

@FishballNooodle this doesnt work bro

FishballNooodle (183)

@FluidGaming
What IDE you using?
If you are not using repl u can read the comments below.
Else Rely to this message with the Error Message

aceprogramer (10)

Mine just opens and then closes immediately. I'm not using repl.it for the same reason as nathanwong123 but I'm also not using trinket. I've imported the libraries already.

FishballNooodle (183)

@aceprogramer Did you install it in your computer using the pip method?
Importing the files by

import discord
from discord.ext import commands

is somthing diffrent

nathanwong123 (0)

It says that there's an error with async def on_ready():. @FishballNooodle

FishballNooodle (183)

@nathanwong123
Make sure you add the @client.event decorator.
Also are you using repl?
Have you imported the modules correctly?

nathanwong123 (0)

@FishballNooodle I'm actually using trinket bcuz I can't make my project private for repl and if I make my project public, people'll use the token and hack my account. Can you show me the full code so ik im typing it correctly?

FishballNooodle (183)

@nathanwong123
In that case you will need to install the modules to your computer through CMD.

Installing discord Modules

  • Open Command Prompt in Start
  • type this
    pip install discord.py
  • Should work after this
HahaYes (1861)

great, are we using the hahayes cycle technique?

EpicGamer007 (1693)

@HahaYes, What is the HahaYes cycle technique™ ?

FishballNooodle (183)

No Clue what you're talking about @HahaYes

CodingRobot12 (183)

This is a great tutorial that new discord bot programmers would want to use. Do you want this to be in my upcoming search engine?