Installing python 3.5.2 ubuntu?

Question

Python

I'm trying to install a new python on my VPS ubuntu 15.10 according to the instructions
https://www.youtube.com/watch?v=jpdFwfGFlq8
I do everything step by step as in the video, there were no errors
However, when I write python3 --version, it displays the old one version 3.4.3+
tried all variants
python3.5 --version
python3.5.2 --version
python --version
Nothing helps

Answer 1

sudo add-apt-repository ppa:fkrull/deadsnakes
sudo apt-get update
sudo apt-get install python3.5

Then call python3.5