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[QUOTE="Alan Gauld, post: 1838457"]
I have a question relating to how Unix commands can be issued

There are numerous methods including the commands module that
you have already discovered, the os.system() call and the
various os.popen/os.execXX calls.

Also Python 2.4 has introduced the subprocess module that
superceded most of these.

Do you actually need to execute the python scripts as scripts,
each with its own instance of the intrerpreter? (For testing
the answer may well be yes) Or would it be possible to simply
execute the script code as a function from within a thread of
your main program?

commands/os.system/subprocess etc are usually used to launch
Unix commands or other executable files, not other Python
scripts. It's easier to interact with Python from within 
Python...

If you must do this then I'd suggest you need to launch a 
separate
thread per shell then use commands/subprocess to launch each
interpreter/script invocation from within its own thread.

[ If you are not interested in the results you could just use
the Unix '&' character to execute the processes in the
background ]

HTH,
[/QUOTE]

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