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NEURAL NETWORK AND DEEP LEARNING
WEEK 4 (B) - I’m facing errors in two-layer model and L-layer model, i’ve been trying since 2 weeks , would you please help me rectify the error. much thankful.

The following cell failed:

parameters, costs = two_layer_model(train_x, train_y, layers_dims = (n_x, n_h, n_y)...

print("Cost after first iteration: " + str(costs[0]))

two_layer_model_test(two_layer_model)

The error was:

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
<ipython-input-9-f9ec5304d38d> in <module>
----> 1 parameters, costs = two_layer_model(train_x, train_y, layers_dims = (n_x, n...
      2 
      3 print("Cost after first iteration: " + str(costs[0]))
      4 
      5 two_layer_model_test(two_layer_model)

ValueError: too many values to unpack (expected 2)