Check the current python version
Run below command to test the current version installed of python.
$ python3 --version
python 3.6.8
Install python3.7
Install python by typing:
$ sudo apt update -y
$ sudo apt install python3.7
Add python 3.6 & python 3.7 to update-alternatives
$ sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.6 1
$ sudo update-alternatives --install /usr/bin/python3 python3 /usr/bin/python3.7 2
Update python 3 to point to python 3.7
By default, Python 3.6 is pointed to Python 3. That means when we run python3 it will execute as python3.6 binary but we want to execute this as python3.7.
Type this command to configure python3:
$ sudo update-alternatives --config python3
There are 2 choices for the alternative python3 (providing /usr/bin/python3).
Selection Path Priority Status
------------------------------------------------------------
* 0 /usr/bin/python3.6 2 auto mode
1 /usr/bin/python3.6 1 manual mode
2 /usr/bin/python3.7 2 manual mode
Press <enter> to keep the current choice[*], or type selection number:
You should get the above output. Now type 2 and hit enter for Python 3.7. Remember the selection number may differ so choose the selection number which is for Python 3.7.
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