Centos源码安装Python3

CentOS7默认安装了python2.7.5，当需要使用python3的时候，可以手动下载Python源码后编译安装。

下载python(https://www.python.org/ftp/python/3.4.3/Python-3.4.3.tar.xz)
解压下载好的压缩包
sudo mkdir /usr/local/python3
进入解压目录sudo ./configure --prefix=/usr/local/python3
sudo make
sudo make install

CentOS 安装easy_install的方法：
wget -q http://peak.telecommunity.com/dist/ez_setup.py
python ez_setup.py
8、CentOS安装python包管理安装工具pip的方法如下：
wget --no-check-certificate https://github.com/pypa/pip/archive/1.5.5.tar.gz
注意：wget获取https的时候要加上：--no-check-certificate

tar zvxf 1.5.5    #解压文件
cd pip-1.5.5/
python3 setup.py install
OK，这样就安装好pip了，

下面来安装 requests吧。

pip3 install requests

sudo yum install epel-release
sudo yum install python34

# yum install -y pcre pcre-devel
# yum install -y zlib zlib-devel
# yum install -y openssl openssl-devel 

wget http://pypi.python.org/packages/source/s/setuptools/setuptools-0.6c11.tar.gz
tar zxvf setuptools-0.6c11.tar.gz
cd setuptools-0.6c11
python setup.py install