Week 3 final graded assignment Train Accuracy

Train Accuracy: 60.000000

Train Accuracy (approx): 92.00

Train Accuracy: 71.186441

Expected Output:

Train Accuracy:~ 80%

No errors flagged, BUT an error in a red box at top of notebook

results are all good! but grading is 0% because of:
Cell #20. Can’t compile the student’s code. Error: TypeError(“unsupported operand type(s) for +=: ‘int’ and ‘NoneType’”)

I can’t find cell20, perhaps becase I’ve run the code several time

as always any assistance is greatly appreciated

The cells are counted-down within the notebook starting from 1.

Please post a screen capture image that includes any errors or asserts and also shows the “red box at the top of the notebook”

Just FYI: Be aware that you usually have to complete the entire notebook before you can submit it for grading. So you can’t complete just part and get partial credit from the grader.