python检测进程是否存在

import win32com.clientdef check_exsit(process_name):
WMI = win32com.client.GetObject('winmgmts:')
processCodeCov = WMI.ExecQuery('select * from Win32_Process where Name like "%{}%"'.format(process_name))
if len(processCodeCov) > 0:
return True
else:
return Falseif __name__ == '__main__':
res = check_exsit('tray.exe')
print(res)