"""Timestamped stderr logging.

stderr rather than stdout: dora reads a dynamic node's stdout, and a print that
lands there is noise in the wrong stream.
"""

import sys
import time


def log(message: str) -> None:
    """Print a timestamped line for the node."""
    print(f"[teleop {time.strftime('%H:%M:%S')}] {message}", file=sys.stderr, flush=True)