Create a class that will return the Fibonacci numbers sequentially everytime it is called using __iter__()

Sure, here is a Python class that uses the __iter__() method to generate Fibonacci numbers sequentially:

class Fibonacci:
    def __init__(self):
        self.prev = 0
        self.curr = 1

    def __iter__(self):
        # This method makes our class iterable
        return self

    def __next__(self):
        # This method should be implemented by an iterator
        value = self.curr
        self.curr += self.prev
        self.prev = value
        return value

You can use this class as follows:

fib = Fibonacci()
for _ in range(10):
    print(next(fib))

This will print the first 10 Fibonacci numbers.