title: How to change Python version in Jupyter notebook?
body: <p>at the beginning I had installed the newest Python 3.9 version. However, on this version I was not able to install tensorflow, which I read is not supporting this version. After it, I installed Python 3.8.7 but my jupyter notebook is still using Python 3.9. How can I change version in Jupyter Notebook to use 3.8.7 instead of 3.9? Thanks in advance.</p>