TypeError：需要一个类似字节的对象，而不是'str'

Question

 csvwriter.writerow(['(+ve word count) ','(-ve word count)' ,'(overall polarity)' ,'(times change in pol)' ,'(largest + cont)' ,'(largest - cont)' ,'(capital letters)' ,'(punctuation)'])

TypeError：需要一个类似字节的对象，而不是'str'