The fibonacci sequence is defined as 1, 1, 2, 3, 5, 8, 13, 21, ... where the 1st and 2nd finbonacci numbers are 1 and 1, and all subsequentumbers are the sum of the prior two.

I don't know what defining a class named fib_range that is initialized by two values (the index of the first and last fibonacci number inclusive), and whose iterator generates all the fibonacci numbers in the range.

This is a sample which the comprehension [i for i in fib_range(4,6)] creates the list [3, 5, 8, 13]

Please help me how I can a class named fib_range