DLS Course 4, Week 3 Img segmentation U_net lab

Course Q&A Deep Learning Specialization Convolutional Neural Networks
1

Something’s screwy. I can’t save and checkpoint anything. With any I action I take, a box appears at the top saying “Permission denied: W3A2/Image segmentation_Unet_v2.ipynb.”
When I submit my work, the grader gives me 0 points, when obviously I’ve passed all the modules.
I can’t copy the Lab. Restarting the kernel doesn’t fix problem. Please reset my lab for me. I’ve screenshotted my work, so I can input again when I have a clean slate.

2

Hi @Gary_Takahashi! We are extremely sorry for the inconvenience. Several learners facing this issue. We already informed the course staff to look into the issue as soon as possible.

Your patience will be highly appreciated. Once they resolve the issue, we will inform you.

Best,
Saif

3

Hi everyone! Sorry for the delay.

Kindly try this:

  1. From the blank notebook, click File -> Open.
  2. Tick the running notebook.
  3. Click Shutdown then Duplicate.
  4. Rename the old notebook (any filename).
  5. Rename the duplicate with the original filename (basically, just remove the -Copy1 string).
  6. Open this newly renamed notebook.
  7. You should be able to save this and also see the submit button after a minute.

You “might see an error about checkpoints failing. I think that’s okay because that’s related to the permissions of the hidden .ipynb_checkpoints folder. That is not needed for grading as far as I know. The changes should persist in the actual notebook itself even if they see that error. I submitted the notebook and got the expected grade.”

@Gary_Takahashi

Best,
Saif.

4

I get a “Permission denied” error when trying to Duplicate the notebook.

5

We informed the course staff about Duplicate failed. We are extremely sorry for the inconvenience.

Best,
Saif.

6

This lab is due on 4/02/2023 and today is Friday. Will this issue get fixed soon? I’ll try to forge on with the following week’s videos so I don’t lose momentum, and don’t want to run out of time.

7

Hi @Gary_Takahashi,

We don’t know the timeline. However, the assignment deadlines are for your reference only, and you can reset it after it was missed, as long as your subscription has not expired. I agree with you that it would be better to keep the ball rolling.

Raymond

1 Like
8

I get the following error for this particular Assignment (I could fix a few others before this one, but I am stuck here):

image
image2023×593 77.3 KB

Any hint?

9

After I posted about the problems I was having, the system engineers tinkered with something and the problem was solved. Did you try the workaround posted previously by saifkhanengr?

10

I manage to find a temporary ad hoc solution for this particular Lab:

  1. Download assignment to you local computer.
  2. Populate the code, run, test, and SAVE the assignment.
  3. Upload your solution file “Image_segmentation_Unet_v2.ipynb” to “W3A2” directory on Coursera. You will overwrite the original file.
  4. Open your uploaded file online, visually check your changes in the code, and click “Submit Assignment”.

This approach worked for me!

11

@saifkhanengr 's solution worked for me for multiple other assignments, but not this one. I am done with this one too, and I’m moving forward.