I don’t know why I am getting this error. [Screenshot 2022-05-15 123724] [Screenshot 2022-05-15 123814] [Screenshot 2022-05-15 123835] [Screenshot 2022-05-15 123856]

Unless there is somekind of update I would suggest to try: from tensorflow import keras and then use the class inheritance from keras.callbacks.Callback. It might be the grader expects it in this format…

I tried, Sir but it did not work out for me

Grader feedback is valid. Here’s the correct way to initialize hist: hist = train_mnist(x_train, y_train)

Failed test case: hist has incorrect type. Expected: <class 'keras.callbacks.History'>, but got: <class 'NoneType'>

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

m.abidat May 15, 2022, 11:22pm 4

Hello @Ankur_Bhatt,
Please refer to this topic

Topic		Replies	Views
Failed test case: hist has incorrect type Introduction to TF for Artificial Intelligence ... week-module-3	2	548	May 15, 2022
History has incorrect type Introduction to TF for Artificial Intelligence ... week-module-3	11	592	August 16, 2022
I keep getting the error <class 'keras.callbacks.History'>, but got: <class 'NoneType'> Introduction to TF for Artificial Intelligence ... week-module-4	5	546	June 28, 2022
Name 'callbacks' is not defined Introduction to TF for Artificial Intelligence ... week-module-2	25	1308	May 4, 2022
Failed test case in C1W2 assignment in last section test Introduction to TF for Artificial Intelligence ... week-module-2	3	28	February 27, 2025

Failed test case: hist has incorrect type. Expected: <class 'keras.callbacks.History'>, but got: <class 'NoneType'>

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