conda create -n openmined python=3.4
source activate openmined
conda install -c anaconda mpc
conda install -c anaconda gmp
conda install -c anaconda mpfr
conda install gmpy2 --channel conda-forge
pip install -r requirements.txt
python setup.py install

conda create -n openmined python=3.6
source activate openmined
conda install -c anaconda mpc
conda install -c anaconda gmp
conda install -c anaconda mpfr
conda install gmpy2 --channel conda-forge
pip install -r requirements.txt
python setup.py install

Update to use Python 3.6
Update to use Python 3.6 

Because latest is better.
Unless there is a reason to use that specific version.