Hi everyone,

say I have a function of both an integer n and a complex z

def f(n,z):
     return z**n

For any tuple of integer (a_1,a_2, ..., a_k), (actually, k and a_i are 
random), I want to form the function 

z -> sum_{i=1}^k |f(a_i, z)|^2

The result must still be a function. I guess it is something which can be 
done by redefining a new class but I'm a totally newbie at object 
programming.
Can you help me ?

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