History has incorrect type

Course Q&A TensorFlow Developer Professional Introduction to TF for Artificial Intelligence ...
1

Failed test case: history has incorrect type.
Expected:
<class ‘keras.callbacks.History’>,
but got:
<class ‘NoneType’>.

I’m getting this issue in week 3 assignment of Introduction to TensorFlow for Artificial Intelligence, Machine Learning, and Deep Learning

2

Do you have this line in the notebook?
history = model.fit(training_images, training_labels, epochs=10, callbacks=[callbacks])

3

Yes …it’s running accordingly . But on submission this above error is being generated.

4

Please click my name and message your notebook as an attachment.

6

Please fix this line in your code:
history = model.fit(training_images, training_labels, epochs=10, callbacks=[callbacks]). tf.keras.callbacks.History

7

Fixed but still same error

8

You’ve not fixed the error. Here it is:
history = model.fit(training_images, training_labels, epochs=10, callbacks=[callbacks]). tf.keras.callbacks.History

9

@Isaac_Owusu_Mensah

There’s no need for you to load the dataset again inside def train_mnist(x_train, y_train):.
They are passed in as function arguments.

Since path is undefined within the function scope, you get an undefined variable error.

10

Sir,
I corrected the code. But still having errors in the grader. Please, what do I do?

[code removed - moderator]

11

Few things @Isaac_Owusu_Mensah :

  1. Please don’t post notebook / code in public. Use these artifacts in direct message to a mentor.
  2. You are still loading data within train_mnist. Did you have trouble understanding my previous feedback?
12

Yes, please. I think I don’t understand what you mean?

13

@Isaac_Owusu_Mensah
Why are you loading data inside train_mnist?