“该进程无法访问该文件，因为该文件正被另一个进程使用."删除图像时 [英] "The process cannot access the file because it is being used by another process" when deleting image

问题描述

因此，我有一些代码可以浏览一堆图像，以查看它们的大小是否正确或已损坏.我使用以下代码执行此操作:

So I have some code where I go through a bunch of images to see whether they have the right size, or is corrupt. I do this with the following code:

import PIL
from PIL import Image

    try:
        img = Image.open("{}/{}.jpg".format(img_dir_path, n))
    except:
        os.remove("{}/{}.jpg".format(img_dir_path, n))
        continue

    if img.size[0] < 600:
        img.close()
        os.remove("{}/{}.jpg".format(img_dir_path, n))
    elif img.size[0] > 600:
        img.close()
        break

这当然是一个循环(如n所示).

This is within a loop of course (as the n indicates).

因此，第一个try/except代码将尝试打开文件，如果可以继续运行.如果不能，则通常已损坏，我要求它删除该文件.到目前为止，一切都很好.然后，我要求它检查图像尺寸是否正确，如果不正确，则将其删除.但是，这几乎总是每次都出错，而我最终遇到了标题中所述的错误.

So the first try/except code it tries to open a file, and if it can it moves on. If it cannot it is usually corrupt, and I ask it to delete that file. So far so good. I then ask it to check if the image has the right size, and if not, delete it. However, this is pretty much where it goes wrong every time, and I end up with the error as posted in the title.

WindowsError: [Error 32] The process cannot access the file because it is being used by another process:

这是随机的.有时我会在前10到20张图片中找到它，有时会在图片300左右出现.我的想法是图像必须打开，因此不能删除.但是正如您所看到的，我之前使用过img.close()函数，因此imo不会发生这种情况.那么是否有解决此问题的方法呢?我是否需要设置时间延迟，以便它实际上有时间在尝试删除图像之前将其关闭，还是...?

And it is kind of random. Sometimes I get it within the first 10-20 images, and sometimes it happens at image 300 or something. My idea is that the image has to be open, and therefore cannot be deleted. But as you can see I have used the img.close() function just before, so this shouldn't happen imo. So is there anyway to fix this ? Do I have to put in a time delay so it actually has time to close the image before trying to delete it, or...?

推荐答案

我的疯狂猜测是，它与Windows文件系统有关.添加具有短暂睡眠的重试循环应该可以解决此问题.

My wild guess that it has something to do with Windows files system. Adding a retry loop with a short sleep should solve this issue.

def remove_file(path, retries=3, sleep=0.1):
    for i in range(retries):
        try:
            os.remove(path)
        except WindowsError:
            time.sleep(sleep)
        else:
            break

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