Deep learning specialization course 5 week 3 programming assignment 2

Course Q&A Deep Learning Specialization Sequence Models
1

I am getting this error:
NameError Traceback (most recent call last)
in
17 print(“\033[92m All tests passed!”)
18
—> 19 create_training_example_test(create_training_example)

in create_training_example_test(target)
2 def create_training_example_test(target):
3 np.random.seed(18)
----> 4 x, y = target(backgrounds[0], activates, negatives, 1375)
5
6 assert type(x) == np.ndarray, “Wrong type for x”

NameError: name ‘backgrounds’ is not defined

2

What do you think 'backgrounds’ is not defined or in other words doesnt exist means?

3

Run all of the cells in the notebook every time you open it.

The “backgrounds” global variable is defined in one of the first few cells.