Install Python via pyenv

We highly recommend pyenv to install multiple Python versions side-by-side, which does not interfere with system-default Pythons.

Install pyenv

NOTE: Change ~/.profile accroding to your shell and system configuration if needed.

$ git clone https://github.com/pyenv/pyenv.git ~/.pyenv
...
$ echo 'export PYENV_ROOT="$HOME/.pyenv"' >> ~/.profile
$ echo 'export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.profile
$ echo 'eval "$(pyenv init -)"' >> ~/.profile
$ exec $SHELL -l
$ pyenv  # check installation
pyenv 1.2.0-6-g9619e6b
Usage: pyenv <command> [<args>]

Some useful pyenv commands are:
   ...

Install pyenv's virtualenv plugin

$ git clone https://github.com/pyenv/pyenv-virtualenv.git ~/.pyenv/plugins/pyenv-virtualenv
...
$ echo 'eval "$(pyenv virtualenv-init -)"' >> ~/.profile
$ exec $SHELL -l
$ pyenv virtualenv  # check installation
pyenv-virtualenv: no virtualenv name given.

Install Python via pyenv

Install Python3 latest version.

$ pyenv install 3.6.4

Create a virtualenv using a specific Python version

Change "myvenv" to specific names required in other guide pages.

$ pyenv virtualenv 3.6.4 myvenv

Activate the virtualenv for the current shell

$ pyenv shell myvenv

Activate the virtualenv when your shell goes into a directory

$ cd some-directory
$ pyenv local myvenv

💡	pyenv local creates a hidden .python-version file at each directory specifying the Python version/virtualenv recongnized by pyenv. Any pyenv-enabled shells will automagically activate/deactivate this version/virtualenv when going in/out such directories.