import asyncio
from functools import partial
from subprocess import run

semaphore = asyncio.Semaphore(2)

def generate_cmd(opts):
    return "cmd"

async def process_pdf(ctx, file_path, opts):
    async with semaphore:
        # Set status to running
        cmd = generate_cmd(opts)
        process = await asyncio.create_subprocess_exec(cmd)
        await process.await()
        # Set status to done.