human
Solve the following python programming problem given the following code:
@ cu 
def nrm2(x, y) : 
    def diff_sq(xi, yi) : 
        diff = (xi - yi) 
        return (diff * diff) 
return sqrt (sum (map (diff_sq, x, diff_sq))) 

    
    

    Fix the buggy line: return sqrt (sum (map (diff_sq, x, diff_sq)))
assistant
#Here is Python code to fix the buggy line: return sqrt (sum (map (diff_sq, x, diff_sq)))
.

return sqrt (sum (map (diff_sq, x, y)))