I want to install tensorflow with python 3.5 using anaconda but I don't know which anaconda version has python 3.5. When I go to anaconda download page am presented with Anaconda 4.3.1 which has either version 3.6 or 2.7 of python
You can install any current version of Anaconda. You can then make a conda environment with your particular needs from the documentation
conda create -n tensorflowproject python=3.5 tensorflow ipython
This command has a specific version for python and when this tensorflowproject environment gets updated it will upgrade to Python 3.5999999999 but never go to 3.6 . Then you switch to your environment using either
source activate tensorflowproject
for linux/mac or
activate tensorflowproject
on windows