app.py

import subprocess

# Check if vllm is installed
try:
    result = subprocess.run(["pip", "show", "vllm"], capture_output=True, text=True)
    if "Name: vllm" in result.stdout:
        print("vllm is installed!")
    else:
        print("vllm is not installed!")
except Exception as e:
    print(f"Error checking vllm installation: {e}")