Hi Andreas,
A try/except block is actually a very pythonic way of dealing with such
issues. You can catch the error with an except clause, that allows
executing some code in case the other thing didn't work out. Make sure to
only catch the error that is raised by what you're trying, otherwise you
may interfere with the normal functioning of things (like catching a
termination signal).
Hope it helps,
Tsjerk
On Fri, Oct 3, 2014 at 1:35 PM, Andreas Warnecke <4ndreas.warne...@gmail.com
> wrote:
> Dear PyMOL users,
>
> I am wondering if there is any way of testing whether a PyMOL version is
> open-source or incentive for use in scripts. I'm thinking of something
> similar to 'cmd.get_version()'.
>
> The reason for this is that I am e.g. using the 'alter' command on custom
> properties in scripts, which is a feature that may not be available in all
> PyMOL versions. At the moment I avoid a crash by placing the code within a
> 'try' statement, but this will yield an error message. If I could actually
> test the incentive/open-source state this would allow me to use an 'if'
> statement instead and avoid the error message.
>
> I would welcome suggestions on how to approach this.
>
> Thanks,
>
> Andreas
>
>
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--
Tsjerk A. Wassenaar, Ph.D.
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