Change Python Version for Jupyter Notebook

Three ways to do it- sometimes package dependencies force analysts and developers to require older versions of Python

  1. use conda to downgrade Python version (if Anaconda installed already)
 conda install python=3.5.0

Hat tip-

2. you download the latest version of Anaconda and then make a Python 3.5 environment.

To create the new environment for Python 3.6, in your Terminal window or an Anaconda Prompt, run:

conda create -n py35 python=3.5 anaconda

3) Uninstall Anaconda and install older version of Anaconda  (download the most recent Anaconda that included Python 3.5 by default, Anaconda 4.2.0)