CODEWITHSUNDEEP
pythonpython-3.xdiscorddiscord.py
AK - 10CA - Glenforest SS 2172
AK - 10CA - Glenforest SS 2172

Reputation: 142

Executing Python Command from Discord.py

So what I want to do is that I want to create an evaluation command in discord.py. So when the user says 

.evaluate print("hi")

I want it to to send the code to python and run it. I seen ways with subprocess.Popen or os.system or system generally, but it only runs shell commands. I was wondering how I do this?

Upvotes: 1

Views: 6042

Answers (3)

3060PlayZ
3060PlayZ

Reputation: 101

Here is the command being owner only.

@client.command()
@commands.is_owner()
async def evaluate(ctx, *, cmd=None):
    try:
        eval(cmd)
        await ctx.send(f'Your bot friend executed your command --> {cmd}')
    except:
        print(f'{cmd} is an invalid command')
        await ctx.send(f'Your bot friend could not execute an invalid command --> {cmd}')

Upvotes: 0

DaveStSomeWhere
DaveStSomeWhere

Reputation: 2540

You can use the python eval() function. Of course allowing people to execute commands in your script is a security risk, please proceed with extreme caution. Not sure what you are trying to accomplish, this type of activity should be avoided.

Try:

@client.command()
async def evaluate(ctx, *, cmd=None):
    try:
        eval(cmd)
        await ctx.send(f'Your bot friend executed your command --> {cmd}')
    except:
        print(f'{cmd} is an invalid command')
        await ctx.send(f'Your bot friend could not execute an invalid command --> {cmd}')

Console Output

None is an invalid command
hi
nocommand(junk) is an invalid command

Discord dialog (using a "?" prefix instead of ".":

enter image description here

Upvotes: 1

hipeople321
hipeople321

Reputation: 122

import contextlib
import io
@bot.command()
async def eval(ctx, *, code):
    str_obj = io.StringIO() #Retrieves a stream of data
    try:
        with contextlib.redirect_stdout(str_obj):
            exec(code)
    except Exception as e:
        return await ctx.send(f"```{e.__class__.__name__}: {e}```")
    await ctx.send(f'```{str_obj.getvalue()}```')

Keep in mind, the example above is very simple, and can be expanded on. For example, exec has a globals argument so that you can use global(pre-defined) variables in your eval statements. You can even format your code so that you can include: ```py

{your code here}```

around your eval command. Whatever you do, make sure no one has access to your eval command but you. Seriously, they might as well be sitting at your computer if they have access to it.

Upvotes: 1

Related Questions