Fibonacci sequence generator

fibonacci_sequence_generator.py

def fibo_num_generator():
    '''
    Create an instance of 'fibo_num_generator' to use it as a generator - 
    e.g. g = fibo_num_generator()
    In order to get the next element in the sequence  --> g.next()
    '''
    yield 0
    yield 1
    yield 1
    a, b = 1, 1
    while True:
        a, b = b, a+b
        yield b