在 Colab 中从 GDrive 读取图像时出现 FileNotFound 错误

Question

我正在尝试操作存储在我的 Google Drive 中不同图像目录中的图像以进行深度学习。但是，我遇到了 FileNotFound 异常。

假设，我在 Google Colab 中的主目录是：

MainDirectory ='/content/drive/My Drive/Colab Notebooks/2020YearDeepLearning/Animals/PetImages/'

并且该文件夹中有两个目录，名为 Dog 和 Cat。我可以通过运行以下代码验证这一点：

MainDirectory ='/content/drive/My Drive/Colab Notebooks/2020YearDeepLearning/Animals/PetImages/'
Categories =['Dog','Cat']

for category in Categories:
    path = os.path.join(MainDirectory,category)
    print(path)

打印目录：

/content/drive/My Drive/Colab Notebooks/2020YearDeepLearning/Animals/PetImages/Dog
/content/drive/My Drive/Colab Notebooks/2020YearDeepLearning/Animals/PetImages/Cat

我现在要做的是显示图像，为此我编写了以下代码：

MainDirectory = '/content/drive/My Drive/Colab Notebooks/2020YearDeepLearning/Animals/PetImages/'
Categories =['Dog','Cat']
for category in Categories:
   path =os.path.join(MainDirectory,category)
   print(path)
    
   for img in os.listdir(path):
      img_array =cv2.imread(os.path.join(path,img),cv2.IMREAD_GRAYSCALE)
      plt.imshow(img_array,cmap="gray")
      plt.show()

但是这会导致以下错误：

FileNotFoundError: [Errno 2] No such file or directory: '/content/drive/My Drive/Colab Notebooks/2020YearDeepLearning/Animals/PetImages/Dog'

附加信息

我导入了以下库：

import numpy as np
import matplotlib.pyplot as plt
import os
import cv2

并使用以下命令安装我的驱动器：

from google.colab import drive
drive.mount('/content/drive')

Answer 1

错误很可能是由文件路径中的空格引起的。在 MainDirectory 文件路径之前添加 r 字符串文字前缀，以用作原始字符串。这是更正后的代码：

MainDirectory = r'/content/drive/My Drive/Colab Notebooks/2020YearDeepLearning/Animals/PetImages/'

在 Colab 中从 GDrive 读取图像时出现 FileNotFound 错误

FileNotFound error while reading images from GDrive in Colab

python

opencv

image-processing

google-colaboratory