mac如何安装python3.5

Python 3发布3.5版本，看了PEP新特性，还是非常棒。安装python3.5，并搭建相应的环境。

安装python3.5

官网网站下载python3.5的mac安装文件。安装3的同时，是不会影响2.X的，两个版本可以共存啦。

创建 virtulenv 环境

安装python3.5之后，3.x版本的包响应也在后面加个3，例如 pip和pip3

python3python
pythonpython3python3.4mpython3.5m-config
python-configpython3-32python3.4m-configpythonw
python2.6python3-configpython3.5pythonw2.6
python2.6-configpython3.4python3.5-32pythonw2.7
python2.7python3.4-32python3.5-config
python2.7-configpython3.4-configpython3.5m
python3whichpython
/usr/bin/python
python3whichpython3
/usr/local/bin/python3
python3whichpip
/usr/local/bin/pip
python3whichpip3
/usr/local/bin/pip3

需要创建一个 虚拟环境，运行：

virtualenv-ppython3venv

该命令使用系统的python3来创建虚拟环境，激活venv环境，查看python版本

python3sourcevenv/bin/activate
(venv)python3whichpython
/Users/ghost/Rsj217/python3/venv/bin/python
(venv)python3whichpython3
/Users/ghost/Rsj217/python3/venv/bin/python3
(venv)python3python
Python3.5.0(v3.5.0:374f501f4567,Sep122015,11:00:19)
[GCC4.2.1(AppleInc.build5666)(dot3)]ondarwin
Type"help","copyright","credits"or"license"formoreinformation.
>>>

此时虚拟环境使用的就是python3.5啦。