pyenv环境安装

安装步骤

1. 安装依赖包

   首页 ·pyenv/pyenv维基 (github.com)

    yum install -y zlib-devel libffi-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel

2. 设置环境变量

    git clone https://github.com/pyenv/pyenv.git ~/.pyenv
    ​
    echo 'export PYENV_ROOT="$HOME/.pyenv"' >> ~/.bashrc
    echo 'export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.bashrc
    echo 'eval "$(pyenv init -)"' >> ~/.bashrc
    exec $SHELL -l
     
    # 安装路径
    /root/.pyenv

3. 测试是否安装成功

    pyenv install --list

安装自己的版本

   mkdir ~/.pyenv/cache
   cd ~/.pyenv/cache
   wget https://registry.npmmirror.com/-/binary/python/3.8.5/Python-3.8.5.tar.xz # 注意以 .tar.xz结尾
   pyenv install 3.8.5 #如果还是从国外下载的，重新登陆这个服务器
   git clone https://github.com/pyenv/pyenv-virtualenv.git $(pyenv root)/plugins/pyenv-virtualenv # 虚拟环境下载
   
   
 # 创建虚拟环境：pyenv virtualenv 3.8.5 zcch_env
 # 激活或切换虚拟环境：pyenv activate zcch_env
 # 进行项目的同步和环境的安装（更新 pip : python -m pip install --upgrade pip ）
 # 退出虚拟环境：pyenv deactivate
 # 删除虚拟环境：rm -rf ~/.pyenv/versions/zcch_env （慎重考虑）
 # 查看所有的虚拟环境信息：ll ~/.pyenv/versions/zcch_env

常见问题

1. pyenv 没有命令virtualenv

   镜像]pyenv-virtualenv: 镜像

 cd /root/.pyenv/plugins/ 
 rm -rf pyenv-virtualenv/ #删除虚拟环境
 git clone https://github.com/pyenv/pyenv-virtualenv.git $(pyenv root)/plugins/pyenv-virtualenv # 重新克下载

1. pyenv install 3.8.5 本地包的时候报错

    /home/core/.pyenv/plugins/python-build/bin/python-build: line 1464: patch: command not found
    ​
    BUILD FAILED (CoreOS 766.5.0 using python-build 20160602)
    ​
    Inspect or clean up the working tree at /tmp/python-build.20160818195434.7155
    Results logged to /tmp/python-build.20160818195434.7155.log
    ​
    Last 10 log lines:
    /tmp/python-build.20160818195434.7155 ~
    /tmp/python-build.20160818195434.7155/Python-2.7.8 /tmp/python-build.20160818195434.7155

   解决办法，使用yum下载缺失的补丁

    yum install patch

   参考:pyenv install 2.7.8 command failed · Issue #677 · pyenv/pyenv (github.com)

2. pyenv active nginx_monitor报错

    Failed to activate virtualenv.
    ​
    Perhaps pyenv-virtualenv has not been loaded into your shell properly.
    Please restart current shell and try again.

   解决办法:

   重新登陆服务器

3. pyenv install 时报错 ERROR: The Python ssl extension was not compiled. Missing the OpenSSL lib?

   解决办法:

   Home · pyenv/pyenv Wiki (github.com)

   Common build problems · pyenv/pyenv Wiki (github.com)

    # 1
    yum install gcc zlib-devel bzip2 bzip2-devel readline-devel sqlite sqlite-devel openssl-devel tk-devel libffi-devel xz-devel
    ​
    # 2 
    CPPFLAGS=-I/usr/include/openssl11 \
    LDFLAGS=-L/usr/lib64/openssl11 \
    pyenv install -v 3.10.6

4. pyenv gitee镜像

   pyenv: pyenv 可以让你轻松地在多个版本的 Python 之间切换

5. pyenv virtrualenv 镜像

   pyenv-virtualenv: 镜像