print([len(''.join(a)) for a in binary_split_array])
print([len(''.join(a)) for a in binary_list])
[0, 8, 8, 8, 8, 8, 8, 8, 8, 8]
[8, 8, 8, 8, 8, 8, 8, 8, 8, 8]
join function of a numpy array composed of string