https://stackoverflow.com/questions/30170468/how-to-run-spyder-in-virtual-environment

https://uoa-eresearch.github.io/eresearch-cookbook/recipe/2014/11/20/conda/

There is an option to create virtual environments in Anaconda with required Python version. 

conda create -n myenv python=3.4 anaconda

This will create virtual environment to virtualenv. To activate it :

source activate myenv   # (in linux)
activate myenv          # (in windows - note that you should be in your c:\anaconda2 directory)

To check the current environment has been changed:

conda info -e

And now to run Spyder with Python 3.4 just type:

spyder