def main(options, split=.9):
    output_file_1 = options.get_input_path("split_training.csv")
    output_file_2 = options.get_input_path("split_test.csv")
    shuffle_split(options.review,
                  output_file_1,
                  output_file_2)
    return output_file_1, output_file_2
def test():
    with open('test.txt', 'w') as f:
        for i in range(100):
            f.write("{0}\n".format(i))
    shuffle_split('test.txt', 'test1.txt', 'test2.txt', 0.9)