centos6中安装python2.7 与python3.3

1、配置共享库 /etc/ld.so.conf

include ld.so.conf.d/*.conf

/usr/local/lib

2、下载源码编译

# Python 2.7.6:

wget http://python.org/ftp/python/2.7.6/Python-2.7.6.tar.xz
tar xf Python-2.7.6.tar.xz

cd Python-2.7.6

./configure --prefix=/usr/local --enable-unicode=ucs4 --enable-shared LDFLAGS="-Wl,-rpath /usr/local/lib"

make && make altinstall

# Python 3.3.5:

wget http://python.org/ftp/python/3.3.5/Python-3.3.5.tar.xz
tar xf Python-3.3.5.tar.xz

cd Python-3.3.5

./configure --prefix=/usr/local --enable-shared LDFLAGS="-Wl,-rpath /usr/local/lib"

make && make altinstall

安装好后，查看

/usr/local/bin/python2.7

 or 

/usr/local/bin/python3.3
是否安装成功

3、安装pip

# First get the setup script for Setuptools:

wget https://bitbucket.org/pypa/setuptools/raw/bootstrap/ez_setup.py 
# Then install it for Python 2.7 and/or Python 3.3:

python2.7 ez_setup.py

python3.3 ez_setup.py

# Now install pip using the newly installed setuptools:

easy_install-2.7 pip

easy_install-3.3 pip

# With pip installed you can now do things like this:

pip2.7 install [packagename]

pip2.7 install --upgrade [packagename]

pip2.7 uninstall [packagename]

4、配置虚拟环境，创建相应的工程

# Install virtualenv for Python 2.7 and create a sandbox called my27project:

pip2.7 install virtualenv

virtualenv-2.7 my27project

# Use the built-in pyvenv program in Python 3.3 to create a sandbox called my33project:

pyvenv-3.3 my33project

# Check the system Python interpreter version:

python --version

# This will show Python 2.6.6

# Activate the my27project sandbox and check the version of the default Python interpreter in it:

source my27project/bin/activate

python --version

# This will show Python 2.7.6

deactivate

# Activate the my33project sandbox and check the version of the default Python interpreter in it:

source my33project/bin/activate

python --version

# This will show Python 3.3.5

deactivate