去掉文档最后的空格

if __name__ == '__main__':

    with open('./data/weibo/train/seq.in', 'r', encoding='utf-8') as f:
        lines = f.readlines()#获取所有行
        sum = 0
        list = []
        for line in lines:#第i行
            #去掉最后空格
            line_ = line.rstrip()

            with open('./data/weibo/train/new.txt', 'a', encoding='utf-8') as g:
                g.write(line_+'\n')

    f.close()
    g.close()