What is pyenv

In Linux, it is a tool that manages the execution environment of Python (for example, I think that it is supposed to be used properly for 2.x series and 3.x series).

Installation

pyenv

Install anyenv according to anyenv Summary-Qiita.
For Ubuntu, execute the following command to install the packages required to install the Python execution environment and the packages that speed up the download of the execution environment.

$ sudo apt install curl llvm sqlite3 libssl-dev libbz2-dev libreadline-dev libsqlite3-dev libncurses5-dev libncursesw5-dev python-tk python3-tk tk-dev aria2

Execute the following command to install pyenv.

$ anyenv install pyenv

Execute the following command to enable the pyenv command.

$ source ~/.bashrc

pyenv-virtualenv This plugin is used when you want to generate multiple execution environments based on a certain execution environment.

Execute the following command to install pyenv-virtualenv.

$ git clone https://github.com/yyuu/pyenv-virtualenv $(pyenv root)/plugins/pyenv-virtualenv

pyenv-ccache By using ccashe (see accelerate C / C ++ compilation with ccache-Qiita), you can use CPython (official Python implementation). A plug-in that speeds up installation.

Install ccashe (for Ubuntu, run the following command).

$ sudo apt install ccache

Execute the following command to install pyenv-ccache.

$ git clone https://github.com/yyuu/pyenv-ccache $(pyenv root)/plugins/pyenv-ccache

pyenv-pip-update A plugin that makes it easy to update libraries managed by pip and conda.

Run the following command to install pyenv-pip-update.

$ git clone https://github.com/massongit/pyenv-pip-update $(pyenv root)/plugins/pyenv-pip-update

command

command	Contents
`$ pyenv`	help
`$ pyenv root`	Absolute path to install pyenv
`$ pyenv shell`	Execution environment in the shell
`$pyenv shell execution environment name`	Setting the execution environment in the shell
`$ pyenv global`	Default execution environment
`$pyenv global execution environment name`	Default execution environment settings
`$pyenv install execution environment name`	Installation of the specified execution environment
`$pyenv uninstall execution environment name`	Uninstall the specified execution environment
`$ pyenv pip-update`	Library updates managed by pip and conda(pyenv-pip-update) * Execution environment that uses conda(anaconda and miniconda)For, update only the libraries managed by conda
`$pyenv virtualenv execution environment(A)Name Execution environment(B)Name`	`pyenv install`Execution environment installed in(A)Execution environment based on(B)To generate(pyenv-virtualenv)
`$ pyenv versions`	List of installed execution environments

If anyenv-update is installed in anyenv, you can update pyenv itself and plugins as part of updating anyenv. __ * Do not execute with root privileges when piping __

[PYTHON] pyenv summary

What is pyenv

Installation

command

References