CentOs7编译安装Python3

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1. 系统升级

   yum update

2. 安装依赖

   yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel libffi-devel zlib1g-dev zlib \*

3. 下载Python3

   如果无法下载可以考虑挂一个梯子，下载完成后放到home目录下也可以代替这条命令

   下载地址：https://www.python.org/ftp/python/ 此处可以选择指定Python版本源码进行下载

   wget https://www.python.org/ftp/python/3.8.5/Python-3.8.5.tar.xz

4. 解压源码包

   tar -xvJf Python-3.8.5.tar.xz

5. 创建编译目录

   mkdir -p /usr/local/python3 

6. 切换解压目录

   cd Python-3.8.5

7. 编译安装

   ./configure --prefix=/usr/local/python3 --enable-optimizations --with-ssl 
   make && make install

8. 创建软连接

   ln -s /usr/local/python3/bin/python3 /usr/local/bin/python3
   ln -s /usr/local/python3/bin/pip3 /usr/local/bin/pip3
   # virtualenvwrapper 命令依赖virtualenv 所以要为virtualenv创建一个软链接
   ln -s /usr/local/python3/bin/virtualenv /usr/local/bin/virtualenv

9. 检查安装状态

   python3 -V
   pip3 -V

   出现如图则为安装成功