Hello

How do I check is database field is empty?

    eng_out = db(db.script.id == 
id_skripte).select(db.script.sc_engine_output)
     print "eng_out ",eng_out 

## this returns
##eng_out  script.sc_engine_output
##<NULL>
    
    if eng_out is None: ## check for nullability
        print "field is Null"


Thank you

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