[root@Python src]# wget https://www.python.org/ftp/python/3.5.4/Python-3.5.4.tar.xz

[root@Python src]# yum install zlib-devel zlib openssl

[root@Python src]# tar xf Python-3.5.4.tar.xz

#可能需要一些库文件

[root@Python src]# yum groupinstall "Development tools"

[root@Python src]# yum install readline-devel

[root@Python src]# cd Python-3.5.4/

[root@Python Python-3.5.4]# ./configure --prefix=/usr/local/python3 --with-ssl

[root@Python Python-3.5.4]# make && make install

[root@Python ~]# cp /usr/bin/python2.7 /usr/bin/python2.7.bak

[root@Python ~]# rm -f /usr/bin/python

[root@Python ~]# ln -s /usr/local/python3/bin/python3.5 /usr/bin/python

[root@Python ~]# vi /usr/bin/yum

#!/usr/bin/python2

[root@Python ~]# vi /usr/libexec/urlgrabber-ext-down

#! /usr/bin/python2.7

[root@Python ~]# python

Python 3.5.4 (default, Feb  6 2018, 02:52:38)

[GCC 4.8.5 20150623 (Red Hat 4.8.5-4)] on linux

Type "help", "copyright", "credits" or "license" for more information.

>>> 

#安装setuptools

[root@Python src]# wget --no-check-certificate  https://pypi.python.org/packages/source/s/setuptools/setuptools-19.6.tar.gz#md5=c607dd118eae682c44ed146367a17e26

[root@Python src]# yum install zlib-devel zlib

[root@Python src]# tar xf setuptools-19.6.tar.gz

[root@Python src]# cd setuptools-19.6/

[root@Python setuptools-19.6]# python setup.py build

[root@Python setuptools-19.6]# cd /usr/local/src/Python-3.5.4/

[root@Python Python-3.5.4]# make && make install

#安装pip3

[root@Python src]# wget https://pypi.python.org/packages/11/b6/abcb525026a4be042b486df43905d6893fb04f05aac21c32c638e939e447/pip-9.0.1.tar.gz

[root@Python src]#  tar xf pip-9.0.1.tar.gz

[root@Python src]#  cd pip-9.0.1

[root@Python pip-9.0.1]# python setup.py build

[root@Python pip-9.0.1]# python setup.py install

#基本安装完成

[root@Python pip-9.0.1]# python -m pip install paramiko

pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.

Collecting paramiko

  Could not fetch URL https://pypi.python.org/simple/paramiko/: There was a problem confirming the ssl certificate: Can't connect to HTTPS URL because the SSL module is not available. - skipping

  Could not find a version that satisfies the requirement paramiko (from versions: )

No matching distribution found for paramiko

[root@Python pip-9.0.1]# yum install openssl-devel

[root@Python bin]# ln -s /usr/local/python3/bin/pip3 /usr/bin/pip