路径名太长，在 Python 中尝试使用 OpenCV 或 PIL.Image 保存图像时出错

Question

I'm trying to save an image as:

img_path = folder_path + "\\image1.png" 

folder_path exists, as I previously check it:

if(not os.path.exists(folder_path)):
    raise OSError("Directory does not exist") #doesn't raise error

I have tried with OpenCV

cv2.imwrite(img_path, img)

But it doesn't create the image, as when I do

if(not os.path.exists(img_path)):
    raise OSError("Image not saved correctly.") #raises error

It raises the error, and when looking to the folder, the image is not there. I have also tried with PIL.Image

img.save(img_path) 

Which gives a FileNotFoundError.

I think the problem is that folder_path is too long (it has 279 characters), as when I try to save the image to another folder it saves it correctly. I don't think there is a permission problem. Is there any way to create some kind of "shortcut" for the OS that the name of the path may be shorter? It's important for the images to be saved at that path.

Answer 1

我发现，使用os.chdir(folder_path)更改工作目录，然后将图像保存为cv2.imwrite("image1.png") 。