Programming Assignment - Neural Network Structure

Hi! I don’t understand how to code for exercise 2. I keep hard-coding it, which is wrong. Another guy asked a similar question, and the mentors helped him, but I don’t fully understand what they were trying to say. Please help. Thank you!

Hi @Syed_Hamza_Tehseen!

I will try to answer here. Exercise 2 asks you to make the function layer_sizes, which has as input the training data X and the training labels Y.

It must return n_x, the input layer size (number of examples) and the output size n_y (also the number of examples).

You can extract it by exploring both X and Y.