a = [1, 2, 3, 4, 5, 6 ,7 ,8 ,9]
splitedSize = 3
a_splited = [a[x:x+splitedSize] for x in range(0, len(a), splitedSize)]
print(a_splited)
# [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
def chunks(l, n):
n = max(1, n)
return (l[i:i+n] for i in range(0, len(l), n))