Script for setting up Python virtual environment on Centos

centos_python_env_setup

#!/bin/bash

# Install stuff #
#################

# Install development tools and some misc. necessary packages
yum -y groupinstall "Development tools"
yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel mysql-devel libxml2-devel libxslt-devel unixODBC-devel sqlite sqlite-devel -y

# Alias shasum to == sha1sum (will prevent some people's scripts from breaking)
echo 'alias shasum="sha1sum"' >> $HOME/.bashrc
# Install Python 2.7.4 (do NOT remove 2.6, by the way)
if [ ! -e ./Python-2.7.4 ]
then
   wget --no-check-certificate http://www.python.org/ftp/python/2.7.4/Python-2.7.4.tar.bz2
   tar xf Python-2.7.4.tar.bz2
fi

if [ ! -e /usr/local/bin/python2.7 ] 
then
    ( cd Python-2.7.4 && ./configure --prefix=/usr/local &&  make && make altinstall )
fi

# Install easy install


echo "[easy_install]" >> ~/.pydistutils.cfg
echo "index_url = http://pypi.douban.com/simple" >> ~/.pydistutils.cfg

mkdir ~/.pip
echo "[global]" >> ~/.pip/pip.conf
echo "index-url = http://pypi.douban.com/simple" >> ~/.pip/pip.conf

wget http://peak.telecommunity.com/dist/ez_setup.py
sed -i 's/pypi.python.org/pypi.douban.com/' ez_setup.py
python ez_setup.py && easy_install pip



# Install virtualenv and virtualenvwrapper
# Once you make your first virtualenv, you'll have 'pip' in there.
# I got bitten by trying to install a system-wide (i.e. Python 2.6) version of pip;
# it was clobbering my access to pip from within virtualenvs, and it was frustrating.
# So these commands will install virtualenv/virtualenvwrapper the old school way,
# just so you can make yourself a virtualenv, with pip, and then do everything Python-related
# that you need to do, from in there.

if [ ! -e virtualenv-1.9.1.tar.gz ]
then
    wget --no-check-certificate http://pypi.douban.com/packages/source/v/virtualenv/virtualenv-1.9.1.tar.gz#md5=07e09df0adfca0b2d487e39a4bf2270a
    tar -xvzf virtualenv-1.9.1.tar.gz 
fi
( cd virtualenv-1.9.1 && python setup.py install )

if [ ! -e virtualenvwrapper-4.0 ]
then
    wget --no-check-certificate http://pypi.douban.com/packages/source/v/virtualenvwrapper/virtualenvwrapper-4.0.tar.gz#md5=78df3b40735e959479d9de34e4b8ba15
    tar -xvzf virtualenvwrapper-*

fi
( cd virtualenvwrapper-4.0 && python setup.py install )

# Running these commands direclty from the script using sudo results
# in setting up virtualenvwrapper on the root account.  If this is not what you want,
# do the following commands by hand from a normal user account. 

# echo 'export WORKON_HOME=~/Envs' >> $HOME/.bashrc # Change this directory if you don't like it
# source $HOME/.bashrc
# mkdir -p $WORKON_HOME
# echo 'source /usr/bin/virtualenvwrapper.sh' >> $HOME/.bashrc
# source $HOME/.bashrc

echo Almost done! Look at the end of the script for the few commands 
echo that need to be run from the user account. 
echo Then you will be able create a vitualenv using: mkvirtualenv foo --python=python2.7
echo and when you want to use that virtualenv, do : workon foo

# Extra stuff #
###############

Cho

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