A simple Python version manager. It is recommended to use pyenv and pipenv together.
ref:
https://github.com/yyuu/pyenv
Install
Before doing the following steps, you must install Command Line Tools.
$ brew update
$ brew install readline openssl
$ brew install pyenv
# or
$ brew upgrade pyenv
To enable shims and autocompletion add to your profile:
if which pyenv > /dev/null; then eval "$(pyenv init -)"; fi
$ pyenv --version
pyenv 1.2.14ref:
https://github.com/vinta/HAL-9000/blob/master/playbooks/roles/python/files/pyenv_profile.sh
Usage
# list available Python versions
$ pyenv install -l
# install a certain version
$ pyenv install 2.7.16
$ pyenv install 3.7.4
# list installed Python versions
$ pyenv versions
# set the default Python version
$ pyenv global 3.5.1
# you can set both Python 2 and 3
$ pyenv global 3.7.4 2.7.16
# switch to the system default Python version
$ pyenv global system
# set the Python version for the current folder
# which generates `.python-version` in the same folder
$ pyenv local 3.7.4
# set the Python version for the current shell
$ pyenv shell 3.7.4