How do I run Python 3?
sudo apt-get install python3
Then
python3
Whether or not Python 3 is installed after installation or not depends mostly on the flavour and version. If a package depends on Python 3 it will be installed.
The best indication on whether it will come with the standard desktop installation is by checking the manifest files for the installation images.
Manifest files:
- 12.04.2 amd64 regular Unity desktop
- 12.04.2 i386 regular Unity desktop
Both do not contain anything with python3. However,
- 13.04 amd64 regular Unity desktop
does have lots of python3 packages.
This means that for 12.04 you'll probably need to install it afterwards: python3 . Use the link to install using the Software Centre or run:
sudo apt-get install python3
Then invoke the new Python 3 shell using
python3
Note that Python 2.7 will still be present and will stay the default.