Setting Python Version 3 on the Path

Question

I have the following:

joesan@joesan-InfinityBook-S-14-v5:~/Projects/Private/ml-projects/ml-data-preparation-sandbox$ sudo update-alternatives --config python
update-alternatives: warning: alternative /usr/bin/python2.7 (part of link group python) doesn't exist; removing from list of alternatives
There are 3 choices for the alternative python (providing /usr/bin/python).

  Selection    Path                Priority   Status
------------------------------------------------------------
  0            /usr/bin/python3.7   4         auto mode
* 1            /usr/bin/python3.7   4         manual mode
  2            /usr/bin/python3.8   2         manual mode
  3            /usr/bin/python3.9   3         manual mode

Press <enter> to keep the current choice[*], or type selection number: 
update-alternatives: warning: forcing reinstallation of alternative /usr/bin/python3.7 because link group python is broken
joesan@joesan-InfinityBook-S-14-v5:~/Projects/Private/ml-projects/ml-data-preparation-sandbox$ python3 --version
Python 3.8.10

How can I set Python3.7 as the default? Should I change the priority? To use Zeppelin 0.10.0 I guess I need Python 3.7.

EDIT: I installed pyenv and I have the following now:

joesan@joesan-InfinityBook-S-14-v5:~$ which python
/home/joesan/.pyenv/shims/python
joesan@joesan-InfinityBook-S-14-v5:~$ python --version
Python 3.7.8
joesan@joesan-InfinityBook-S-14-v5:~$ pyenv versions
  system
* 3.7.8 (set by /home/joesan/.pyenv/version)
joesan@joesan-InfinityBook-S-14-v5:~$

The star says 3.7 already is the current one... Use python --version — OneCricketeer
– OneCricketeer, Commented Nov 4, 2021 at 19:00
Also, looking at your previous question, zeppelin.python is using a hard-coded /usr/bin/python, not the value python itself. Only in the later case, does the PATH actual matter — OneCricketeer
– OneCricketeer, Commented Nov 4, 2021 at 19:03
You can see that python3 --version gives Python 3.8.10 which is actually my problem! — joesan
– joesan, Commented Nov 4, 2021 at 19:03
That's not really a problem with Zeppelin, though, but you should be doing sudo update-alternatives --config python3 — OneCricketeer
– OneCricketeer, Commented Nov 4, 2021 at 19:05
Why not using an environment manager like conda or miniconda? — DDomen
– DDomen, Commented Nov 4, 2021 at 19:06

mrvol · Accepted Answer · 2021-11-04 19:20:19Z

1

O, boy. Please consider using pyenv. You will be able to use as many python versions as you need.

answered Nov 4, 2021 at 19:20

mrvol

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2 Comments

joesan Over a year ago

I played around with it, but did not solve my problem. Have a look at my original post above!

joesan Over a year ago

Finally I managed to get this solved. Thanks a ton for recommending pyenv!

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