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我在一个python脚本中用到了WMI,用于确保杀死超时却未能自己结束的进程 (已经先尝试了Ctrl+Break中止)。
测试代码运行正常,但当我把这个函数放在子线程中使用时,却发现报错:
com_error: (-2147221020, ‘Invalid syntax‘, None, None)
后来在网上检索,发现必须添加初始化函数和去初始化函数,所以在一个子线程中可使用的函数代码类似于:
import win32com.client import pythoncom import subprocess import logging def task_kill_timeout(timeout): pythoncom.CoInitialize() WMI = win32com.client.GetObject(‘winmgmts:‘) all_process = WMI.ExecQuery(‘SELECT * FROM Win32_Process where Name="aaa.exe" or Name="bbb.exe" or Name="ccc.exe"‘) for process in all_process: t = process.CreationDate t = t[:t.find(‘.‘)] start_time = time.strptime(str(t), ‘%Y%m%d%H%M%S‘ ) time_passed_by = time.time() - time.mktime(start_time) if time_passed_by > timeout: logging.error( ‘Run taskkill %s‘ % process.name) print ‘Run taskkill %s‘ % process.name subprocess.Popen(‘taskkill /F /pid %s‘ % process.processid, stderr=subprocess.PIPE, stdout=subprocess.PIPE, ) time.sleep(1.0) pythoncom.CoUninitialize ()
一旦上述aaa.exe,bbb.exe,ccc.exe进程运行超过timeout秒,即会被强制结束。
参考链接:
http://bytes.com/topic/python/answers/608938-importing-wmi-child-thread-throws-error
时间: 2024-11-06 17:41:30