Xkcgqhfpuolp [C1_W2_Assignment]

I submitted this task for Week 2: Programming Assignment: System of Linear Equations

But i wasn’t graded.

Was it not graded, or was it graded and you got a score of 0?

It’s graded 0 although i passed all tests.

What does the grader feedback say?

In the grader report, click on the > marker, this will open a text box that gives more details.

“There was a problem compiling the code from your notebook. Details:
name ‘A_ref’ is not defined”

And I have A_ref defined

Also I have this same problem from Week 3
“There was a problem compiling the code from your notebook. Details:” this was the feedback

This issue usually has two possible causes:

  1. Some of the notebook’s metadata has been deleted. The grader uses this to know which cells contain code it should test. Sometimes this can happen if you accidentally delete a cell and then restore it, or it can happen if you work on the notebook using a different local environment, and then upload it back into Coursera.

  2. Or, you are using an obsolete version of the assignment notebook file.

Either way, the fix is the same: Get a new copy of the notebook and start over.
Here is the procedure:

  • Open the notebook.
  • Use the File menu to rename the notebook.
  • Use the Help menu and “Get latest version”.
  • Use the File menu to open the new notebook. It will have the original file name.
  • Complete the assignment, run all of the tests in the notebook, then submit for grading.