Unable to install pyhton 3.7 version on ubuntu 16.04 error Couldn't find any package by regex 'python3.7

Hello,

Have you tried running python3.7 --version instead of only python3?

If this still does not work what I would suggest is following these steps here:

• Run a quick update and install the following package:

apt update
sudo apt install software-properties-common

• Add the following to your source list:

sudo add-apt-repository ppa:deadsnakes/ppa

Note: In case that you get prompted just press Enter to continue

• After that install Python 3.7 with the command that you’ve specified in your question:

sudo apt install python3.7

Then again test this with:

python3.7 --version

Hope that this helps! Regards, Bobby