Quiz 07 part 2: Fibonacci

#Quiz 07 p2

def fibonacci(n):

    if (n!=1 and n!=0):
        x =0
        y =1
        for e in range (0,n-1):
            e=x+y
            x = y
            y = e

    elif (n==1):
        e = 1

    elif (n==0):
        e = 0


    return(i)

n = input("Give a nonnegative integer: ")
n = int(n)

r = fibonacci(n)

print("The ",n," element of the Fibonacci list is: ", r)