def uptime(start_time):
    """Calculate the difference between now() and the given create_time.

    @param start_time: milliseconds passed since 'event' (not since epoc)
    @type float
    """
    from datetime import datetime
    return datetime.now() - datetime.fromtimestamp(start_time)
dataset/ETHPy150Open scalyr/scalyr-agent-2/scalyr_agent/builtin_monitors/windows_system_metrics.py/uptime/original