python 读取txt文件并在txt每行文件后面增加内容

要求

想在原来txt文件每行文件后面增加内容

修改后效果

源码

label=2ff = open('./img_0505_128/train1.txt','w') #打开一个文件，可写模式with open('./img_0505_128/train.txt','r') as f: #打开一个文件只读模式line = f.readlines()i = 0for line_list in line:line_new =line_list.replace('\n','') #将换行符替换为空('')b = str(label) #主要是这一步 将之前列表数据转为str才能加入列表line_new = line_new +'.jpg '+b +'\n'i += 1print(line_new)ff.write(line_new) #写入一个新文件中

train.txt

swimming__0001swimming__0002swimming__0003swimming__0004swimming__0005swimming__0006

train1.txt

swimming__0001.jpg 2swimming__0002.jpg 2swimming__0003.jpg 2swimming__0004.jpg 2swimming__0005.jpg 2swimming__0006.jpg 2