Three ways to do it- sometimes package dependencies force analysts and developers to require older versions of Python
- use conda to downgrade Python version (if Anaconda installed already)
conda install python=3.5.0
Hat tip- http://chris35wills.github.io/conda_python_version/
https://docs.anaconda.com/anaconda/faq#how-do-i-get-the-latest-anaconda-with-python-3-5
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 https://repo.continuum.io/archive/ (download the most recent Anaconda that included Python 3.5 by default, Anaconda 4.2.0)