Week 4: quiz question 5 about layer_dim

[petril48]

In question 5 of week 4’s quiz:
layer_dims = [nx, 4,3,2,1].
I have tried to code it in a python page, and len(layer_dims)=5
So if I choose this one:

It means I am initializing 5 w and b. However, there are only 4 hidden layers, so I would be initializing one w and b too many.

Where is my problem? should len(layer_dims)=4?
Isn’t nx the size of the input vector x?

Thank you for your answer,

Best,

[paulinpaloalto]

Remember that array indices and loop indices in python are “zero based”. Try running the following loop and watch what happens:

for ii in range(1,5):
    print(f"ii = {ii}")