centos 安装python3

 

一定要先安装

http://blog.csdn.net/yabingshi_tech/article/details/50439142
yum install openssl -y
yum install openssl-devel -y

python3

http://www.cnblogs.com/wenchengxiaopenyou/p/5709218.html

cd Python-3.5.2
./configure --prefix=/opt/Python #安装目录可以自己定义无所谓。
make
make install

做软连接

# ln -s /opt/Python/bin/python3 /usr/bin/python3

修改yum python2.6

vi /usr/bin/yum

将第一行的#!/usr/bin/python修改为系统原有的python版本地址#!/usr/bin/python2.6，
至此CentOS6.3系统Python已成功升级至2.7.6版本。

安装 SETUPTOOLS
wget --no-check-certificate https://pypi.python.org/packages/source/s/setuptools/setuptools-19.6.tar.gz#md5=c607dd118eae682c44ed146367a17e26

tar -zxvf setuptools-19.6.tar.gz

cd setuptools-19.6.tar.gz

python3 setup.py build

python3 setup.py install

安装 pip
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

安装完成之后我们再来看下python的bin目录下都有什么东西吧
[root@centos3 bin]# /opt/Python/bin/pip3 install pymysql
Collecting pymysql
Downloading PyMySQL-0.7.5-py2.py3-none-any.whl (77kB)
100% |████████████████████████████████| 81kB 3.2kB/s
Installing collected packages: pymysql
Successfully installed pymysql-0.7.5

######安装完成

[root@centos3 bin]# python3
Python 3.5.2 (default, Jul 27 2016, 03:36:56)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-4)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import pymysql
>>>
安装ipython3

python3 -m pip install ipython
ln -s /usr/local/Python3/bin/ipython3 /usr/bin/ipython3