'int' object not callable when defining function [on hold]

I have the following code:

from __future__ import division
import numpy as np

def gauss(k):
x, y = np.arange(100.0)/100.0, np.arange(100.0)/100.0
return((0.5**2/((2*3.14159)*(k**2)))*np.exp(-((1-(x-k))**2)/(2(k**2))).sum()*np.exp(-((1+k-y)**2)/(2(k**2))).sum())


And I get an error:

'int' object is not callable


I've seen answers to questions similar to this one, but I'm still stuck because I can't work out what integer in this code could possibly be causing the proble. Any help would be greatly appreciated.

This question appears to be off-topic. The users who voted to close gave this specific reason:

The import is irrelevant: 2(k**2).
– jonrsharpe
Jun 29 at 18:42

2(k**2)

1 Answer
1

The error is in the 2(k**2) part (which occurs twice). There's probably an infix operator missing between the two and the parenthesis.

2(k**2)

In general, I think that line is trying to do too much at once which makes bugs hard to spot.

Thanks very much
– Iwan Phillips
Jun 30 at 11:38