W2_A1_Getting name error

Im currently working on week 2’s python basics with numpy. All of my code is correct and I get the correct answer but everytime it says that the test function (that is already made by coursera/the instructor) is not defined. How do I fix this. Thanks

Every time you open the notebook, you must run all of the cells starting from the top of the file.

That’s where the assets (like the test utilities) are imported.