i have three python version installed on zorin os 16 which are as follows
python 3.9.5 64 bit
python 3.8.10 64 bit
python 2.7.18 64 bit
due to multiple version of python im having problem while coding so i want to know that can i delete python version 2.7.18 and python version 3.8.10 and only keep python version 3.9.5
Sadly, no... There are libraries that depend on those versions present in the system. Removing them could cause crashes or even kernel panic.
Once done, it is not so easy to undo, either. @337harvey experienced this first-hand...
You can set up alternatives to ensure the 3.8 version is used for the system, then create aliases in the .bashrc file to point to the 3.9 version when you call python or python3. The same can be done for pip3. You can also specify which version the IDE uses.
In this way you ensure the system uses the python version it requires and you can add and code in another.