file classification
Second lesson on learning python
Questions are as follows:
1.os and os.path operations
Put mnist_train/datasetthe files in the folder into mnist_trainthe corresponding folder according to the label, remove the label and add the mnist_train_prefix, for example, 1_1.pngchange it to mnist_train_1.pngand put the file mnist_tarin/1in the folder, and submit the code for the job.
Significance: Strengthen the further understanding of the path, and be familiar with the operation of the file.
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Title description: The general meaning is to classify each number from the dataset into 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 folders, and rename them
code show as below:
import os
rootpath = "D:\\I\\college\\artificial intelligence\\os&&opencv\\mnist_train"
root1 = "D:\\I\\college\\artificial intelligence\\os&&opencv\\mnist_train\\dataset"
list1 = os.listdir(rootpath)
for dir_name in list1: #在list1中调用dir_name
for file_name in os.listdir(os.path.join(rootpath, dir_name)): #将dir_name与rootpath合并，并返回给file_name
temp = file_name.split('.',1)[0] #分离file_name中文件的文件名与后缀名，并把文件名赋给temp
name1 = temp.split('_',1)[0]
name2 = temp.split('_',1)[1] #分离temp中文件的文件名，根据_的前后分离，并将前面赋给name1，后面赋给name2
print (os.path.join(root1, file_name) + "\t\t" + os.path.join(rootpath, name2, 'mnist_train_' + name1 + ".png"))
os.rename(os.path.join(root1, file_name), os.path.join(rootpath, name2, 'mnist_train_' + name1 + ".png")) #重命名
operation result:
As shown in the picture: all the 0s in the dataset folder have entered the 0 folder, and the rest of the numbers are the same, so there is nothing in datast.
