# -*- coding: utf-8 -*-

import psutil


def is_process_exists(proc_name):
    """

    :param proc_name:
    :return: (bool, int), if fail, return pid is -1
    """
    for pid in psutil.pids():
        try:
            p = psutil.Process(pid)
            if p.name() == proc_name:
                return True, pid
        except psutil.NoSuchProcess:
            continue

    return False, -1


if __name__ == '__main__':
    is_process_exists("idle")