python如何判断一个进程是否存在？
源代码如下：
#-*- coding:utf-8 -*-
def check_exsit(process_name):
import win32com.client
WMI = win32com.client.GetObject('winmgmts:')
processCodeCov = WMI.ExecQuery('select * from Win32_Process where Name="%s"' % process_name)
if len(processCodeCov) > 0:
print '%s is exists' % process_name
else:
print '%s is not exists' % process_name
if __name__ == '__main__':
check_exsit('chrome.exe')
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