ImportError: No module in import tensorflow in Jupiter notebook.

I'm a python beginner.

in the March 2017 issue of Interface on page 60
on the Jupiter Notebook import tensorflow as tf

ImportError: No module named 'tensorflow'
Failed to execute with error.

tensorflow/ipython has been installed before.

As a trial, I tried adding the folder path with tensor.py below, but it still didn't fix the problem.
sys.path.append("c:\tmp\AI\Anaconda3\Lib\site-packages\sympy\tensor")

Please tell me what the problem is.

Environment: Windows 10 64-bit Download Anaconda 4.3.1