# [Tutor] How to implement function like this?

Ricardo Aráoz ricaraoz at gmail.com
Tue Oct 23 15:28:15 CEST 2007

```Yinghe Chen wrote:
> Hello gurus,
>
> I have a question, a function like below, it is implemented by me, :)
>
> def funcA(tarray):
>        a = [2,3,4]
>         if len(tarray) >=3:
>              return a[0],a[1], a[2]
>         elif len(tarray) == 2:
>             return a[0],a[1], funcB(1)[0]
>         elif len(tarray) == 1:
>            return a[0], funcB(2)[0], funcB(2)[1]
>         else:
>             return funcB(3)[0], funcB(3)[1], funcB(3)[2]
>
>
> The return of funcA is always 3 values, but depending on the length of
> tarray, I need to return different values accordingly.  if tarray lenght
> is 2, I need to get another one value from funcB, if tarray length is 0,
> I need to get all three values from funcB.
>
>
> Is there a brief way to achieve it?
>

def funcA(tArray) :
a = [2,3,4]
L = min(len(tArray), 3)
return tuple(i for n, i in enumerate(a) if n < L)+tuple(funcB(len(a)-L))

```