Thanx for your replies. I'm looking for array of functions. Something like a=[ sin(x) , cos(x) ] >>> x=0.0 >>> a [0, 1] >>> x=1.0 >>> a ... of course it can be made by >>> def cratearray(x): ... ~~~~ ... return a a=createarray(1.0) but this isn't what i am asking for. something automized.