pyenv 安装

linux上进行安装

1.环境准备:

yum install gcc zlib-devel bzip2 bzip2-devel readline-devel sqlite sqlite-devel openssl-devel tk-devel libffi-devel

2.Check out pyenv where you want it installed. A good place to choose is $HOME/.pyenv (but you can install it somewhere else)

 git clone https://github.com/pyenv/pyenv.git ~/.pyenv

3.Define environment variable PYENV_ROOT to point to the path where pyenv repo is cloned and add $PYENV_ROOT/bin to your $PATH for access to the pyenv command-line utility.

For bash:

echo 'export PYENV_ROOT="$HOME/.pyenv"' >> ~/.bash_profile

echo 'export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.bash_profile

4.Add pyenv init to your shell to enable shims and autocompletion. Please make sure eval "$(pyenv init -)" is placed toward the end of the shell configuration file since it manipulates PATH during the initialization.

echo -e 'if command -v pyenv 1>/dev/null 2>&1; then
  eval "$(pyenv init -)"
fi' >> ~/.bash_profile

5.Restart your shell so the path changes take effect. You can now begin using pyenv

exec "$SHELL"

6.安装

pyenv install --list

安装 

pyenv install 3.8.6

查看当前python版本

pyenv version

查看安装了多少个python版本

pyenv versions

pyenv virtualenv 3.8.6 sandbox27

pyenv activate <name>

pyenv deactivate