Fibonacci Sequence

def fibonacci(n):
    a, b = 0, 1
    for _ in range(n):
        yield a
        a, b = b, a + b

arr = []
 
for num in fibonacci(10):
    arr.append(num)
 
# [0, 1, 1, 2, 3, 5, 8, 13, 21, 34]