python杀掉某个指定的进程

pustil模块

psutil是一个跨平台库(http://pythonhosted.org/psutil/)能够轻松实现获取系统运行的进程和系统利用率（包括CPU、内存、磁盘、网络等）信息。它主要用来做系统监控，性能分析，进程管理。
使用pustil库之前，需要先安装，安装命令如下：

pip install pustil

进程信息

pids = psutil.pids()
for pid in pids:
    p = psutil.Process(pid)
    # get process name according to pid
    process_name = p.name()
    
    print("Process name is: %s, pid is: %s" %(process_name, pid))

可以查看的进程信息：

p.name()   #进程名
p.exe()    #进程的bin路径
p.cwd()    #进程的工作目录绝对路径
p.status()   #进程状态
p.create_time()  #进程创建时间
p.uids()    #进程uid信息
p.gids()    #进程的gid信息
p.cpu_times()   #进程的cpu时间信息,包括user,system两个cpu信息
p.cpu_affinity()  #get进程cpu亲和度,如果要设置cpu亲和度,将cpu号作为参考就好
p.memory_percent()  #进程内存利用率
p.memory_info()    #进程内存rss,vms信息
p.io_counters()    #进程的IO信息,包括读写IO数字及参数
p.connections()   #返回进程对象的列表
p.num_threads()  #进程开启的线程数p.username()　　#执行用户的名

杀掉指定进程

linux系统

import signal

pids = psutil.pids()
for pid in pids:
    p = psutil.Process(pid)
    # get process name according to pid
    process_name = p.name()
    # kill process "sleep_test1"
    if 'sleep_test1' == process_name:
        print("kill specific process: name(%s)-pid(%s)" %(process_name, pid))
        os.kill(pid, signal.SIGKILL)  
    
exit(0)

报错：

AttributeError: module 'signal' has no attribute 'SIGKILL'

参考文章AttributeError: module ‘signal‘ has no attribute ‘SIGKILL‘，修改上面代码：

 #os.kill(pid, signal.SIGKILL) 
 os.kill(pid, signal.INT)

依然报错：

Traceback (most recent call last):
  File "C:\\Users\\xrw020\\AppData\\Local\\Programs\\Python\\Python38\\lib\\site-packages\\psutil\\_pswindows.py", line 679, in wrapper
    return fun(self, *args, **kwargs)
  File "C:\\Users\\xrw020\\AppData\\Local\\Programs\\Python\\Python38\\lib\\site-packages\\psutil\\_pswindows.py", line 933, in create_time
    user, system, created = cext.proc_times(self.pid)
ProcessLookupError: [Errno 3] assume no such process (originated from OpenProcess -> ERROR_INVALID_PARAMETER)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\\Users\\xrw020\\AppData\\Local\\Programs\\Python\\Python38\\lib\\site-packages\\psutil\\__init__.py", line 354, in _init    self.create_time()
  File "C:\\Users\\xrw020\\AppData\\Local\\Programs\\Python\\Python38\\lib\\site-packages\\psutil\\__init__.py", line 710, in create_time
    self._create_time = self._proc.create_time()
  File "C:\\Users\\xrw020\\AppData\\Local\\Programs\\Python\\Python38\\lib\\site-packages\\psutil\\_pswindows.py", line 681, in wrapper
    raise convert_oserror(err, pid=self.pid, name=self._name)
psutil.NoSuchProcess: psutil.NoSuchProcess process no longer exists (pid=17184)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "main.py", line 128, in <module>
    KilWebServerProcess(casepath)
  File "main.py", line 41, in KilWebServerProcess
    p = psutil.Process(pid)
  File "C:\\Users\\xrw020\\AppData\\Local\\Programs\\Python\\Python38\\lib\\site-packages\\psutil\\__init__.py", line 326, in __init__
    self._init(pid)
  File "C:\\Users\\xrw020\\AppData\\Local\\Programs\\Python\\Python38\\lib\\site-packages\\psutil\\__init__.py", line 367, in _init    raise NoSuchProcess(pid, None, msg)
psutil.NoSuchProcess: psutil.NoSuchProcess no process found with pid 17184

分析原因：os.kill（）是linux系统杀死进程的方法，对于windows系统并不适用

windows系统

#根据进程名杀死进程
pro = 'taskill /f /im %s'% process_name
os.system(pro)
#根据pid杀死进程
process = 'taskill /f /pid %s'%pid
os.system(process)

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