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pyenv + pyenv-virtualenv (CentOS 7)

Overview
I summarized the installation on CentOS.
Although it is little different from OSX, it is organized because the premise environment is different.

environment
I am trying in the next environment.

$ uname -r
3.10.0-229.14.1.el7.x86_64
$ lsb_release -a
LSB Version: :core-4.1-amd64:core-4.1-noarch:cxx-4.1-amd64:cxx-4.1-noarch:desktop-4.1-amd64:desktop-4.1-noarch:languages-4.1-amd64:languages-4.1-noarch:printing-4.1-amd64:printing-4.1-noarch
Distributor ID: CentOS
Description: CentOS Linux release 7.1.1503 (Core)
Release: 7.1.1503
Codename: Core

Installing packages

Installation of packages required for CentOS

yum -y install git
yum -y groupinstall “Development Tools”
yum -y install readline-devel zlib-devel bzip2-devel sqlite-devel openssl-devel

Installation of pyenv

git clone https://github.com/yyuu/pyenv.git ~/.pyenv
echo ‘export PYENV_ROOT=”$HOME/.pyenv”‘ >> ~/.bash_profile
echo ‘export PATH=”$PYENV_ROOT/bin:$PATH”‘ >> ~/.bash_profile
echo ‘eval “$(pyenv init -)”‘ >> ~/.bash_profile
source ~/.bash_profile
exec $SHELL -l

pyenv-virtualenv

git clone https://github.com/yyuu/pyenv-virtualenv.git ~/.pyenv/plugins/pyenv-virtualenv
echo ‘eval “$(pyenv virtualenv-init -)”‘ >> ~/.bash_profile
exec $SHELL -l

How to use pyenv

List of installable distributions, versions

pyenv install 2.7.10
pyenv install 3.5.0

Installation

Installation of the version you want to use

$ pyenv versions

  • system (set by /home/saitou/.pyenv/version)
    2.7.10
    3.5.0

Changing the version to be used by default

Do not make changes to Python on the system side.
In the following, 2.7.10 which was additionally installed is changed to the default of the user environment.

pyenv global 2.7.10
pip install – U pip
If you want to use Python on the system side, specify system.

$ python -V
Python 2.7.5
$ pyenv global 2.7.10
$ python -V
Python 2.7.10
$ pyenv global system
$ python -V
Python 2.7.5

How to use pyenv + pyenv-virtualenv

pyenv virtualenv

I want to use different versions for each project.
In this way you can allocate specific directories to specific versions and use them separately.

$ pyenv virtualenv 3.5.0 new_env
$ mkdir -p work/new_project && work/new_project/
$ pyenv versions

  • system (set by /home/saitou/.pyenv/version)
    2.7.10
    3.5.0
    new_env
    $ pyenv local new_env
    pyenv-virtualenv: activate new_env
    $ python -V
    Python 3.5.0
    $ cd ..
    pyenv-virtualenv: deactivate new_env
    $ python -V
    Python 2.7.5
    $ cd new_project/
    pyenv-virtualenv: activate new_env
    $ python -V
    Python 3.5.0

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