Python Environment Setup on MacOSX

setup.sh

#!/bin/bash 
# assumes that XCode and XCode command line tools have been installed
#  xcode-select --install 
# assumes that gfortran has been installed 
#  https://gcc.gnu.org/wiki/GFortranBinaries

# install pyenv & set 2.7.11 as current 
#  See: https://github.com/yyuu/pyenv-installer
#  See: https://github.com/yyuu/pyenv
curl -L https://raw.githubusercontent.com/yyuu/pyenv-installer/master/bin/pyenv-installer | bash
pyenv install 2.7.11 
pyenv install 3.5.1 
pyenv global 2.7.11 3.5.1  # makes 2.7.11 the default and as python2.7, makes 3.5.1 available as python3.5

# install pip
curl -O https://bootstrap.pypa.io/get-pip.py 
python2.7 get-pip.py 
python3.5 get-pip.py


# Install virtualenv
pip2.7 install virtualenv 
pip3.5 install virtualenv


# create a new project for data analysis with jupyter using python2.7
virtualenv venv 
. venv/bin/activate 
pip install pyzmq --install-option="--zmq=bundled"   # avoids library path issues with libzmq 
pip install pandas
pip install scipy 
pip install scikit-learn 
pip install vincent 
pip install jupyter 

deactivate  # when done with this virtualenv

# create a new project using python3.5 setting 3.5 as the default based on directory location:
mkdir py3.5 
cd py3.5 
pyenv local 3.5.1  # sets python3.5 as default when you cd into this dir 
virtualenv venv 
. venv/bin/activate 
# pip install as before