Install and run Python 3 at the same time than Python 2

Question

Im using 13.04 but I want have installed the both main Python versions for make tests about migration of my actual code.

is possible install Python 3 in the same machine running Python 2.7? I need work with both versions,thanks!

Salem · Accepted Answer · 2013-09-28 12:23:34Z

54

Yes, you just need to install python3 package.

$ sudo apt-get install python3

Python 2.X will still be the default Python used, so if you want to run a script with Python 3.X you need to run

$ python3 /path/to/script.py

or add in the first line of your executable script:

#!/usr/bin/env python3

answered Sep 27, 2013 at 13:52

Salem

19.4k6 gold badges62 silver badges89 bronze badges

I search a lot and only found information about how to install Python 3 but nothing about if my dev environment is safe with both versions running. Thanks!
– mlacunza
Sep 27, 2013 at 15:39
2

@mlacunza If you install both from the default repositories (ex: with apt-get, Software Center) you will have no problem at all. But if you install from source, depending on where it ends installed and if it replaces the default python installation you can have some problems.
– Salem
Sep 28, 2013 at 12:21
@mlacunza If this answered your question, mark it as answered.
– Salem
Oct 7, 2013 at 13:55
Which version of python will be installed? In my case it installed 3.2 but I needed 3.5.
– CKM
Mar 14, 2017 at 5:54

Add a comment |

1 Answer 1