HELP ! Popen.terminate() - WindowsError: [Error 5] Access is denied

Prasad, Ramit ramit.prasad at
Thu Mar 1 19:15:55 CET 2012

> Now when I put "proc.terminate()" in my signal_handler() function to
> terminate the subprocess created as well,
> It is giving me "WindowsError: [Error 5] Access is denied" error.
> I have tried with os.kill() also, same error.  Tried with Popen.kill() also
> same error. Have googled a bit but couldn't understand them.
> In general,  How to kill a subprocesses created from a python program.? If
> that subprocess also creates a new process from itself, how can I kill all
> child processes from my main python script.?

I have not tested this, but you could get the pid by doing and
then killing it from the command line by doing "taskkill /PID [pid]".
This is all dependant on the users ability to kill the task in the first place.
If that does not work then the problem is probably not Python but Windows.

You could test by running your program and doing the taskkill in a separate
command prompt. 

Hope that helps,

Ramit Prasad | JPMorgan Chase Investment Bank | Currencies Technology
712 Main Street | Houston, TX 77002
work phone: 713 - 216 - 5423


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