python读取txt无法识别’\n‘

如题,本人在进行命名实体识别时需要处理txt文本数据,由于该数据中存在'\n'换行符,因此需要加一个判断来处理,但python程序似乎无法识别'\n',写的判断语句并没有将txt中的'\n'识别出来。以下是部分代码:
python程序:

        with open("train1.txt", 'r', encoding='utf-8') as f:
            word_list = []
            tag_list = []
            i=1
            for line in f:
                print(line,i)
                i+=1
                if line != '\n':
                    word, tag = line.strip('\n').split()
                    word_list.append(word)
                    tag_list.append(tag)
                else:
                    print(word_list)
                    word_lists.append(word_list)
                    tag_lists.append(tag_list)
                    word_list = []
                    tag_list = []

txt数据预览:

img

报错信息:
ValueError: not enough values to unpack (expected 2, got 0)

检查文件格式,如果是Windows上的文件格式,空白行是if line != '\r\n',如果是Linux则是\n。

修改后的代码为

with open("train1.txt", 'r', encoding='utf-8') as f:
    word_list = []
    tag_list = []
    for line in f:
        if len(line.strip().replace(" ", ""))>=2:
            word, tag = line.strip().split()
            word_list.append(word)
            tag_list.append(tag)
        else:
            word_lists.append(word_list)
            tag_lists.append(tag_list)
            word_list = []
            tag_list = []