[Python知识库]python 路径拼接总结

如果最终访问路径为以下
‘D:/Users/RY/PycharmProjects/pythonProject15/images&labels.csv’
我们可以采用两种方式具体如下
方法一
采用with open(image_path+filename)

import csv
import os
images, labels = [], []
image_path='D:/Users/RY/PycharmProjects/pythonProject15/'
filename='images&labels.csv'
with open(image_path+filename) as f:
        reader = csv.reader(f)
        for row in reader:
            img, label = row
            label = int(label)

            images.append(img)
            labels.append(label)

方法二
with open(os.path.join(image_path,filename))

import csv
import os
images, labels = [], []
image_path='D:/Users/RY/PycharmProjects/pythonProject15'
filename='images&labels.csv'
with open(os.path.join(image_path,filename)) as f:
        reader = csv.reader(f)
        for row in reader:
            img, label = row
            label = int(label)

            images.append(img)
            labels.append(label)

两种方式看似相同其实有小小的区别就是最后的’/‘，采用os.path.join它会自动加’/‘，所以我们再定义路径的时候要把最后的’/'去掉。