Linux下安装python3.6
1. 安装依赖环境
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
2.下载Python3
https://www.python.org/downloads/
wget https://www.python.org/ftp/python/3.6.1/Python-3.6.1.tgz
3.安装python3
我个人习惯安装在/usr/local/python3（具体安装位置看个人喜好）
创建目录：
mkdir -p /usr/local/python3
解压下载好的Python-3.x.x.tgz包(具体包名因你下载的Python具体版本不不同⽽而不不同，如：我下载的是Python3.6.1.那我这里就是Python-3.6.1.tgz)
tar -zxvf Python-3.6.1.tgz
4.进入解压后的目录，编译安装。
cd Python-3.6.1
./configure --prefix=/usr/local/python3
make && make install
5.建立python3的软链
ln -s /usr/local/python3/bin/python3 /usr/bin/python3
6.并将/usr/local/python3/bin加入PATH
vim ~/.bash_profile
.bash_profile
# Get the aliases and functions
if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi
# User specific environment and startup programs
PATH=$PATH:$HOME/bin:/usr/local/python3/bin
export PATH
source ~/.bash_profile
检查Python3及pip3是否正常可用：
# python3 -V
Python 3.6.1
# pip3 -V
pip 9.0.1 from /usr/local/python3/lib/python3.6/site-packages (python 3.6)
7.不行的话在创建一下pip3的软链接(我也不清楚这一步有什么用)
ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3
安装pip前需要前置安装setuptools
命令如下：
wget --no-check-certificate https://pypi.python.org/packages/source/p/pip/pip-8.0.2.tar.gz#md5=3a73c4188f8dbad6a1e6f6d44d117eeb
tar -zxvf pip-8.0.2.tar.gz
cd pip-8.0.2
python3 setup.py build
python3 setup.py install
如果前面没布置好环境的话，就要苦逼一下了：
报错： RuntimeError: Compression requires the (missing) zlib module
我们需要在linux中安装zlib-devel包，进行支持。
yum install zlib-devel
需要对python3.5进行重新编译安装。
cd python3.6.1
make && make install
又是漫长的编译安装过程。
重新安装setuptools
python3 setup.py build
python3 setup.py install
2、安装pip
命令如下：
wget --no-check-certificate https://pypi.python.org/packages/source/p/pip/pip-8.0.2.tar.gz#md5=3a73c4188f8dbad6a1e6f6d44d117eeb
tar -zxvf pip-8.0.2.tar.gz
cd pip-8.0.2
python3 setup.py build
python3 setup.py install
