上一篇升级版，转换文件内容。

#!/user/bin env python
# author:Simple-Sir
# time:2021/7/9 23:32

def txt_2_list(filename):
    dic = {}
    dic_k = []
    dic_v = []
    with open(filename,'r',encoding='utf-8') as f:
        for i in f.readlines():
            j = i.strip('\n')  # 删除换行符
            li_k = j.split(',')  # 以逗号分隔为列表
            if len(li_k) == 2:
                dic[li_k[0]] = li_k[1]
                dic_k.append(li_k[0])
                dic_v.append(li_k[1])
            else:
                dic_k.append(li_k[0])
    return dic,dic_k,dic_v

def get_word_in_list(info,dic_k):
    word_li = []
    while len(info) > 0:
        m = 0
        n = 0
        for i in range(len(info)+1):
            if info[:i] in dic_k:
                word_li.append(info[:i])
                info = info[i:]
                n = 1
                m = i
        if n == 0:
            word_li.append(info[0:1])
            info = info[m+1:]
    return word_li

def translat_word(word_li,dic,dic_k):
    get_v = []
    for i in word_li:
        if i in dic_k:
            get_v.append(dic[i])
        else:
            get_v.append(i)
    re_w = ('_').join(get_v)
    return re_w


if __name__ == '__main__':
    dict_file = 'dir'
    info_file = 'infofile'
    info_k=txt_2_list(info_file)[1]
    print('----------- 要转换的内容 ----------\n ',('\n  ').join(info_k))
    print('----------- 转换结果 ------------')
    for info in info_k:
        dic,dic_k,dic_v = txt_2_list(dict_file)
        word_li = get_word_in_list(info, dic_k)
        tw = translat_word(word_li,dic,dic_k)
        print('%s -->> %s'%(info,tw))

字典库：

剪刀,jiandao
被子,beizi
笔,bi
我,wo
要,yao

要转换的文件内容：

我要剪刀
我不要剪刀
我要剪刀和笔
我要被子和剪刀

转换结果：