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+# 安装 Python3
+## Mac
+`brew install python3`
+
+## Centos 上
+在 Mac 上用ssh远程服务器
+
+```
+ssh -t root@ip -p 22（端口）
+```
+
+在 Windows 推荐用 Xshell。
+
+## 下载解压
+1. `wget https://www.python.org/ftp/python/3.6.1/Python-3.6.1.tgz`
+1. `tar xf Python-3.6.1.tgz`
+
+## 编译前需要的其他库
+1. `yum -y update`
+1. `yum groupinstall -y development`
+1. `yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel`
+
+## 编译
+1. `cd Python-3.6.1`    
+1. `./configure` : 修改安装路径： `./configure --prefix=/root` 默认是，`/usr/local` 注1。
+1. `make && make altinstall`
+1. `make altinstall`
+
+注1：`make altinstall` 报找不到 zlib 的错。解决方案,见[这里](http://stackoverflow.com/questions/12344970/building-python-from-source-with-zlib-support)。
+
+`./configure --prefix=/usr/local LDFLAGS="-Wl,-rpath /usr/local/lib"`
+
+## 安装完成后
+```
+python3.6 --version
+```
+
+用 python 做为命令
+```
+alias python='/usr/local/bin/python3.6'
+```
+
+```
+pip3.6 --version
+```
+
+不知道怎么将`pip3.6`设置别名。
+
+## 在别的地方也可以用
+`export PATH="/usr/local/bin:$PATH"`
+
+
+## 参考
+* [How To Set Up Python 2.7.6 and 3.3.3 on CentOS 6.4](https://www.digitalocean.com/community/tutorials/how-to-set-up-python-2-7-6-and-3-3-3-on-centos-6-4)
+* [How to install Python3 on CentOS](http://ask.xmodulo.com/install-python3-centos.html)
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