I came from a Windows background whern it comes to development environments. I'm used to run .exe's from everything I need to run and just forget.
I usually code in php, javascript, css, html and python.
Now, I have to use Linux at my work, in a non changeable Ubuntu 8.04, with permissions to upgrade my system using company's repositories only.
I need to install Python 2.4.3 to start coding in an old legacy system. I had Python 2.5. I downloaded Python 2.4.3 tarballs, ran ./configure make and such. Everything worked out, but now the "default" installation is my system is Python2.4 instead of of Python2.5.
I want help from you to change it back, and if possible, some material to read about symlinks, multiple Python installations, virtualenvs and such: everything I need to know before installing/upgrading Python modules. I installed for example the ElementTree package and don't even know in which Python installation it was installed.
Thanks in advance!
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/usr/local/bin, which, in turn, may come in your $PATH before /usr/bin where 2.5 lives. There are various possible remediations, if that is the case: simplest is probably to
rm the link named /usr/local/bin/python (leaving only the "system" one named /usr/bin/python). You will then have to use explicitly
python2.4 to invoke the 2.4 installation, while just python will go to the system-installed Python 2.5 installation.. 3:
python command you will have to manually change the symlink that /usr/bin/python points to, but that won't change what the packaging system considers the "default version of Python" and means you will still have to install version-specific libraries if they are different for a specific version. Luckily, those packages have an easy naming convention, instead of just
python-<foo> they are python2.4-<foo> and installing those will put them in the right path (specifically the right site-packages directory).. EDIT: apparently python isn't managed by the alternatives system, silly Debian/Ubuntu. 4:
sudo apt-get install --reinstall python-minimal python python2.5 Ubuntu 8.04 has Python 2.4.5 (package python2.4), maybe that works for you.. If you need to install Python from source use.
./configure --prefix=/usr/local/ This makes python to be install at /usr/local/ so it doesn't overwrite the distribution's files.
5:
sudo ln -s /usr/bin/python2.5 /usr/bin/python