Python多处理。检查进程是否正在运行

import multiprocessing
import time

def worker():
    print("进程开始")
    time.sleep(5)  # 模拟长时间运行的任务
    print("进程结束")

if __name__ == "__main__":
    # 创建一个进程
    p = multiprocessing.Process(target=worker)
    p.start()

    # 检查进程是否在运行
    if p.is_alive():
        print("进程正在运行")
    else:
        print("进程已结束")

    # 等待一段时间后再次检查
    time.sleep(2)
    if p.is_alive():
        print("进程仍然在运行")
    else:
        print("进程已经结束")

    # 等待进程结束
    p.join()
    if p.is_alive():
        print("进程还在运行")
    else:
        print("进程已完全结束")

import multiprocessing
import time

def worker(name):
    print(f"进程 {name} 开始")
    time.sleep(3)  # 模拟长时间运行的任务
    print(f"进程 {name} 结束")

if __name__ == "__main__":
    manager = multiprocessing.Manager()
    processes = {}

    # 创建并启动多个进程
    for i in range(3):
        p = multiprocessing.Process(target=worker, args=(f"Process-{i}",))
        p.start()
        processes[p.pid] = p

    # 检查每个进程的状态
    while True:
        all_dead = True
        for pid, process in processes.items():
            if process.is_alive():
                print(f"进程 {pid} 正在运行")
                all_dead = False
            else:
                print(f"进程 {pid} 已结束")
        if all_dead:
            break
        time.sleep(1)

    print("所有进程已结束")

pip install psutil

import psutil

def is_process_running(process_name):
    for proc in psutil.process_iter(['name']):
        if proc.info['name'] == process_name:
            return True
    return False

if __name__ == "__main__":
    process_name = "python.exe"  # 根据实际情况修改
    if is_process_running(process_name):
        print(f"{process_name} 正在运行")
    else:
        print(f"{process_name} 未运行")