I follow the notes and practice Neural Networks on jupyter notebook python, At first I'm having problem with import tensorflow as tf and then I look up on youtube and created new environment called tf in Anaconda Navigator and install tensorflow and keras.

This image shows you an example of this. The right window is my command prompt, and it does not know Python since I did not install it. However, I have Anaconda installed, and with it comes a tool called Anaconda Prompt. You can see it on the left, that one knows Python. You should have this Anaconda prompt as well. Search for it in the start menu, run your pip install there and your problem should be fixed.

CodePudding user response：

the question solved by !pip install visualization; in the Jupyter Notebook in environment called tf that I created