django学习之pythonbrew部署开发环境

关于pythonbrew的介绍：https://github.com/utahta/pythonbrew
中文文档：http://pythonbrew.readthedocs.org/en/latest/

选择pythonbrew的原因：

融合了virtualenv，创建隔离环境更方便快捷

具有pyenv的所拥有的所有功能（个人感觉更强悍）

使用示例

列出可安装的 python 版本：

pythonbrew list --know

安装某个版本的 python ：

pythonbrew install 2.7.3

删除已安装的某版本的 python ：

pythonbrew uninstall 2.7.3

列出已安装的 python 版本(当前使用的版本后会用星号标记)：

pythonbrew list

使用某个版本的 python （仅当前终端窗口有效)：

pythonbrew use 2.7.3

切换到某个版本的 python （一直有效）：

pythonbrew switch 2.7.3

清理陈旧的源码目录和档案包：

pythonbrew cleanup

升级到pythonbrew到最新版本：

pythonbrew update

禁用pythonbrew(即切换回原始环境)：

pythonbrew off

创建python隔离环境(借助virtualenv)：

安装脚本：

(fuck)[root@php ~]# cat pythonbrew.sh
#!/bin/bash
#Function: create pythonbrew env
#Author: zhuima
#Date: 2014-11-06
#Version: 0.1
#
REVTAL=0
# import Functions
. /etc/rc.d/init.d/functions
# check network
. /etc/sysconfig/network
if [ $NETWORKING = 'no' ];then
exit $REVTAL
fi
# install epel yum source
function epel_install(){
if rpm --version &>/dev/null;then
rpm -ivh  http://mirrors.ustc.edu.cn/fedora/epel/6/x86_64/epel-release-6-8.noarch.rpm else
exit $REVTAL
print "please checking your yum configure!"
fi
}
# install base packages
function base_packages(){
if yum repolist &>/dev/null;then
yum install yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel patch -y
else
exit $REVTAL
print "please checking your yum configure!"
fi
}
# install pip
function pip_install(){
if yum repolist &>/dev/null;then
yum install python-pip -y
else
exit $REVTAL
print "please checking your yum configure!"
fi
}
# install pythonbrew
function pythonbrew_install(){
if pip -V &>/dev/null;then
pip install pythonbrew
pip install virtualenv
else
exit $REVTAL
print "please checking your pip configure!"
fi
}
# config pythonbrew env
function pythonbrew_env(){
echo '[[ -s "$HOME/.pythonbrew/etc/bashrc" ]] && source "$HOME/.pythonbrew/etc/bashrc"' >>~/.bashrc
. /usr/bin/pythonbrew_install && source ~/.bashrc
}
# install python 2.7.6
function python_install(){
if $HOME/.pythonbrew/bin/pythonbrew --version &>/dev/null;then
$HOME/.pythonbrew/bin/pythonbrew install 2.7.6
else
exit $REVTAL
print "please checking your pyenv configure"
fi
}
# install ipdb、ipython
function install_ipython(){
if pip --version &>/dev/null;then
pip install ipdb
pip install ipython
else
yum install pip -y
pip install ansible
pip install ipython
fi

}
while :;do
cat << EOF
+-------------------------------------------+
|1、Install epel_install		    |
|2、Install base_packages	            |
|3、Install pip_install			    |
|4、Install pythonbrew_install 		    |
|5、Install pythonbrew_env		    |
|6、Install python_install		    |
|7、Install install_ipython		    |
|8、One-Click Setup			    |
|9、[Q|q|quit] to quit			    |
+-------------------------------------------+
EOF
read -p "select which one packages you want to install: " choice
case $choice in
1)
epel_install
;;
2)
base_packages
;;
3)
pip_install
;;
4)
pythonbrew_install
;;
5)
pythonbrew_env
;;
6)
python_install
;;
7)
install_ipython
;;
8)
epel_install
base_packages
pip_install
pythonbrew_install
pythonbrew_env
python_install
install_ipython
;;
Q|q|quit)
exit $REVTAL
;;
*)
echo "Usage: select one number(1|2|3|4|5|6|7|8|9)"
exit $REVTAL
;;
esac
done

简单演示：
创建一个名为flask的虚拟坏境并切换到这个虚拟环境下面

[root@php blog]# pythonbrew venv create flask
Creating `flask` environment into /root/.pythonbrew/venvs/Python-2.7.6
Already using interpreter /root/.pythonbrew/pythons/Python-2.7.6/bin/python
New python executable in /root/.pythonbrew/venvs/Python-2.7.6/flask/bin/python
Installing setuptools.............done.
Installing pip...............done.
[root@php blog]# pythonbrew venv use flask
# Using `flask` environment (found in /root/.pythonbrew/venvs/Python-2.7.6)
# To leave an environment, simply run `deactivate`
(flask)[root@php blog]#
(flask)[root@php blog]#
(flask)[root@php blog]#

在这个虚拟环境下安装版本为1.6的django

(flask)[root@php ~]# pip install django==1.6            # 安装版本为1.6的django
Downloading/unpacking django==1.6
Downloading Django-1.6.tar.gz (6.6MB): 6.6MB downloaded
Running setup.py egg_info for package django

warning: no previously-included files matching '__pycache__' found under directory '*'
warning: no previously-included files matching '*.py[co]' found under directory '*'
Installing collected packages: django
Running setup.py install for django
changing mode of build/scripts-2.7/django-admin.py from 644 to 755

warning: no previously-included files matching '__pycache__' found under directory '*'
warning: no previously-included files matching '*.py[co]' found under directory '*'
changing mode of /root/.pythonbrew/venvs/Python-2.7.6/flask/bin/django-admin.py to 755
Successfully installed django
Cleaning up...
(flask)[root@php ~]# python -c "import django;print (django.get_version())"  # 在我们创建虚拟环境中打印django的版本
1.6
(flask)[root@php ~]# pythonbrew off
[root@php ~]# python -c "import django;print (django.get_version())"        # 打印django版本，这里提示没有这个模块
Traceback (most recent call last):
File "<string>", line 1, in <module>
ImportError: No module named django
[root@php ~]#

撸完收工，也就是一个工具而已，不必在意这些细节，能用就好，python多版本管理工具很多的，找一个适合自己的就行，多了反而会被其所左右~