The Zen of Python - Fibonacci

# Type your code here
def calculate_fibonacci(n):

    def iterativex(max1, previous, current,contador):
        newcurrent = current + previous
        contador = contador + 1
        if contador > max1:
           return current
        else:
           return iterativex(max1,current,newcurrent,contador)  

    return iterativex(n,0,1,1)