start and kill process by command promt

[Giampaolo Rodolà]

There's no need to use taskill.exe;
keep a reference of the subprocess.Popen() object around and use its
kill() method instead.


--- Giampaolo
http://code.google.com/p/pyftpdlib
http://code.google.com/p/psutil


2010/6/21 shanti bhushan <ershantibhushan at gmail.com>:
> On Jun 21, 10:41 am, shanti bhushan <ershantibhus... at gmail.com> wrote:
>> Hi,
>> I want to invoke local wen server named mogoose, and kill it after
>> some time by python script.
>> Then i want to change the argument and invoke it again.
>>
>> I am able to do this with below code.
>>
>> import subprocess
>> import time
>>
>> def invoke_server1():
>>     s1ret=subprocess.Popen(r'C:\WINDOWS\system32\cmd.exe /C "D:
>> \372\pythonweb\mongoose-2.8.exe >YourOutput.txt"')
>>     print s1ret
>>
>> def invoke_server2():
>>     s2ret=subprocess.Popen(r'C:\WINDOWS\system32\cmd.exe /C "D:
>> \372\pythonweb\mongoose-2.8.exe -root D:\New1\ >YourOutput.txt"')
>>     print s2ret
>> def invoke_server3():
>>     s3ret=subprocess.Popen(r'C:\WINDOWS\system32\cmd.exe /C "D:
>> \372\pythonweb\mongoose-2.8.exe -root D:\New2\ >YourOutput.txt"')
>>     print s3ret
>>
>> def kill_server():
>>     killret=subprocess.Popen(r'C:\WINDOWS\system32\cmd.exe /c
>> "taskkill /F /IM mongoose-2.8.exe >YourOutput1.txt"')
>>     print killret
>>
>> kill_server()
>> time.sleep(5)
>> invoke_server1()
>> time.sleep(5)
>> kill_server()
>> time.sleep(5)
>> invoke_server2()
>> time.sleep(5)
>> kill_server()
>> time.sleep(10)
>> invoke_server3()
>> time.sleep(5)
>> kill_server()
>>
>> This works fine in python26 ,but when i use this code in one testing
>> tool, server is invoked 1st time properly.but for second time it says
>> process already occupied cannot access the process. I am not able to
>> understand why subprocess.Popen(r'C:\WINDOWS\system32\cmd.exe /c
>> "taskkill /F /IM mongoose-2.8.exe  is not working second time .Please
>> guide me in this respect.
>>
>> Or please tell me is there any other way,to do same thing with python
>> script that will start and kill windows process for my requirement.
>>
>> Regards
>> Bhushan
>
> i am getting following error message
> "process cannot acces the file because it is being used by other
> process"
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