I'm developer and I need to make my enviroment work with Python 2.7.6 (not 2.7.3) on the Ubuntu 12.04. Please, provide me some notes how to do that?
Ubuntu 12.04 ships with python 2.7.3. You should be able to download https://www.python.org/ftp/python/2.7.6/Python-2.7.6.tgz and follow the README file. The steps should be simple enough.
./configure make make install
Note that you don't have to remove python-2.7.3 from your system to install an other version. You can switch between different versions using
sudo update-alternatives --config python
Also, did you check this out?