1、下载python3.5@H_301_5@

wgethttps://www.python.org/ftp/python/3.5.0/Python-3.5.0.tgz@H_301_5@

注：如果在Linux中下载较慢，可以在Windows操作系统中去Python官网下载：https://www.python.org/downloads/release/python-350/@H_301_5@

注意要下载Gzipped source tarball版本的，然后使用WinSCP将下载好的文件Python-3.5.0.tgz拖拽到Linux中，后续步骤还是不变的。
@H_301_5@

2、解压@H_301_5@

tar zxvf Python-3.5.0.tgz@H_301_5@

3、进入Python-3.5.0文件夹@H_301_5@

cd Python-3.5.0@H_301_5@

4、配置安装位置@H_301_5@

./configure--prefix=/usr/local/python3.5@H_301_5@

注：如果没有安装C语言编译器会提示错误。如果出现错误，在联网的情况下使用 yum install gcc 命令安装gcc编译器@H_301_5@

5、编译@H_301_5@

make@H_301_5@

6、安装@H_301_5@

make install@H_301_5@

7、下载并安装setuptools 18.5@H_301_5@

wget https://bootstrap.pypa.io/ez_setup.py -O - | python@H_301_5@

注：如果提示错误--no-check-certificate@H_301_5@

在wget后加上 --no-check-certificate :wget--no-check-certificatehttps://bootstrap.pypa.io/ez_setup.py -O - | python@H_301_5@

8、备份原有python命令执行文件@H_301_5@

mv/usr/bin/python/usr/bin/pythonbak@H_301_5@

9、创建新python软连接@H_301_5@

ln-s/usr/local/python3.5/bin/python3.5/usr/bin/python@H_301_5@

10、查看python版本@H_301_5@

python
@H_301_5@

[root@localhost Python-3.5.0]# python
Python 3.5.0 (default,Oct  7 2016,04:34:35) 
[GCC 4.4.7 20120313 (Red Hat 4.4.7-17)] on linux
Type "help","copyright","credits" or "license" for more information.

@H_301_5@

#!/usr/bin/python python修改为 python2.6
import sys
try:
    import yum
except ImportError:
    print >> sys.stderr,"""\
There was a problem importing one of the Python modules
required to run yum. The error leading to this problem was:

   %s

Please install a package which provides this module,or
verify that the module is installed correctly.

It's possible that the above module doesn't match the
current version of Python,which is:
%s

If you cannot solve this problem yourself,please go to 
the yum faq at: