Ubuntu how do you remove all Python 3 but not 2

Question

I have recently get hold of a RackSpace Ubuntu server and it has pythons all over the place    iPython in 3 5  Pandas in 3 4  amp 2 7  modules I need like pyodbc etc  are only in 2 7  Therefore  I am keen to clean up the box and  as a 2 7 users  keep everything in 2 7    So the key question is  is there a way to remove both 3 4 and 3 5 efficiently at the same time while keeping Python 2 7

User · Answer

First of all  don t try the following command as suggested by Germain above        sudo apt-get remove  python3       In Ubuntu  many software depends upon Python3 so if you will execute this command it will remove all of them as it happened with me  I found following answer useful to recover it   https   askubuntu com questions 810854 i-deleted-package-python3-on-ubuntu-and-i-have-lost-dashboard-terminal-and-un  If you want to use different python versions for different projects then create virtual environments it will be very useful  refer to the following link to create virtual environments   Creating Virtual Environment also helps in using Tensorflow and Keras in Jupyter Notebook   https   linoxide com linux-how-to setup-python-virtual-environment-ubuntu

User · Answer

EDIT  As pointed out in recent comments  this solution may BREAK your system   You most likely don t want to remove python3   Please refer to the other answers for possible solutions   Outdated answer  not recommended    sudo apt-get remove  python3

User · Answer

Removing Python 3 was the worst thing I did since I recently moved to the world of Linux  It removed Firefox  my launcher and  as I read while trying to fix my problem  it may also remove your desktop and terminal  Finally fixed after a long daytime nightmare  Just don t remove Python 3  Keep it there   If that happens to you  here is the fix   https   askubuntu com q 384033 402539  https   askubuntu com q 810854 402539

User · Answer

neither try any above ways nor sudo apt autoremove python3 because it will remove all gnome based applications from your system including gnome-terminal  In case if you have done that mistake and left with kernal only than trysudo apt install gnome on kernal   try to change your default python version instead removing it  you can do this through bashrc file or export path command

User · Answer

Its simple just try  sudo apt-get remove python3 7 or the versions that you want to remove

User · Answer

So I worked out at the end that you cannot uninstall 3 4 as it is default on Ubuntu   All I did was simply remove Jupyter and then alias python python2 7 and install all packages on Python 2 7 again   Arguably  I can install virtualenv but me and my colleagues are only using 2 7  I am just going to be lazy in this case

[python] Ubuntu, how do you remove all Python 3 but not 2

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