新增离线版文档

offline-notes/installation/Linux下Python安装.md

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+## Linux下Python安装
+
+>**系统环境**：centos 7.6
+>
+>**Python 版本**：Python-3.6.8
+
+### 1. 环境依赖
+
+Python3.x 的安装需要依赖这四个组件：gcc， zlib，zlib-devel，openssl-devel；所以需要预先安装，命令如下：
+
+```shell
+yum install gcc -y
+yum install zlib -y
+yum install zlib-devel -y
+yum install openssl-devel -y
+```
+
+### 2. 下载编译
+
+Python 源码包下载地址： https://www.python.org/downloads/
+
+```shell
+# wget https://www.python.org/ftp/python/3.6.8/Python-3.6.8.tgz
+```
+
+### 3. 解压编译
+
+```shell
+# tar -zxvf Python-3.6.8.tgz
+```
+
+进入根目录进行编译，可以指定编译安装的路径，这里我们指定为 `/usr/app/python3.6` ：
+
+```shell
+# cd Python-3.6.8
+# ./configure --prefix=/usr/app/python3.6
+# make && make install
+```
+
+### 4. 环境变量配置
+
+```shell
+vim  /etc/profile
+```
+
+```shell
+export PYTHON_HOME=/usr/app/python3.6
+export  PATH=${PYTHON_HOME}/bin:$PATH
+```
+
+使得配置的环境变量立即生效：
+
+```shell
+source /etc/profile
+```
+
+### 5. 验证安装是否成功
+
+输入 `python3` 命令，如果能进入 python 交互环境，则代表安装成功：
+
+```shell
+[root@hadoop001 app]# python3
+Python 3.6.8 (default, Mar 29 2019, 10:17:41)
+[GCC 4.8.5 20150623 (Red Hat 4.8.5-36)] on linux
+Type "help", "copyright", "credits" or "license" for more information.
+>>> 1+1
+2
+>>> exit()
+[root@hadoop001 app]#
+```
+