optparse question (python 2.6)

[Andy Kannberg]

Hi python-guru's,

I am new to Python, coming from a long history of Unix/linux shell
programming.
I am creating a Python script (In Python 2.6)  which should be able to read
command line options and arguments.
So far, I figured out how to do that with optparse. I can add options (and
arguments ) .
There are about 7 options that can be selected.

However, I can't seem to figure out how to force that only one option is
allowed when the script is invoked. In other words: How to restrict the
script to accept only one of the available options ?

cheers,
Andy
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