TensorFlow is typically installed by using of following statement:
pip install --upgrade tensorflow
Unforunatelly if you try to execute it on a WIndows OS, it might fail with following error:
Could not find a version that satisfies the requirement tensorflow (from versions: )
No matching distribution found for tensorflow
To install a correct distribution use ANACONDA with following command:
conda create -n tensorflow pip python=3.6
Note that supportad python version (today) is 3.5 or 3.6.