How about:

if db((db.script.id == id_skripte) & (db.script.sc_engine != None)).select
():

Anthony

On Wednesday, January 22, 2014 9:30:45 AM UTC-5, Yebach wrote:
>
> I tryied with 
>
> eng_out = db(db.script.id == 
> id_skripte).select(db.script.sc_engine_output)[0]['sc_engine_output']
>     print "eng_out ", eng_out
>     
>     if eng_out is None:
>         print "Ni podatkov"
>
>
> but I am sure there has to be a better way. 
>
> thanx again
>

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