import subprocess
import select

# Start a subprocess that runs a shell command
process = subprocess.Popen(['your_command'], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE)

# Use select to monitor the process's stdin
ready_to_read, _, _ = select.select([process.stdin], [], [], timeout=1)

if not ready_to_read:
    print("Process is waiting for input or idle.")
else:
    print("Process is actively doing something.")