python virtualenv

# Ubuntu/Linux 64-bit
# install python3.5
sudo apt-get install libssl-dev make build-essential libssl-dev zlib1g-dev libbz2-dev libsqlite3-dev -y
wget https://www.python.org/ftp/python/3.5.3/Python-3.5.3.tar.xz
tar Jxvf Python-3.5.3.tar.xz
cd Python-3.5.3/ && ./configure && make && sudo make install

# install virtualenv
sudo apt-get install python-pip python-dev python-virtualenv -y

# create virtualenv named kaggle_venv
python3.5 -m venv kaggle_venv

# start virtualenv
source kaggle_venv/bin/activate

# exit virtualenv
deactivate

$ virtualenv -p /usr/bin/python3.4 venv
$ source venv/bin/activate