это к третьей

https://www.8host.com/blog/ustanovka-python-3-i-na...

http://proft.me/2010/04/3/python-i-okruzhenie-virt...

https://www.8host.com/blog/nastrojka-uwsgi-i-nginx-dlya-obsluzhivaniya-prilozhenij-python-v-ubuntu-14-04/

https://losst.ru/ustanovka-python-3-ubuntu

http://www.cyberforum.ru/ubuntu-linux/thread194653...

install-flask-green-unicorn-on-ubuntu

$ mkdir dz03

$ cd dz03

$ sudo apt-get update

$ sudo apt-get -y upgrade

sudo apt-get install -y python3-pip

$ sudo apt install python-pip

$ apt-get install python3-pip

$ pip install --upgrade pip

$ sudo apt install virtualenv

$ pip install virtualenv

$ pyversions -d

virtualenv --no-site-packages venvdz03

source bin/activate

$ pip install python3

------------
apt-get update

apt-get install python3-dev

-------

gnome-system-monitor

uwsgi --socket 127.0.0.1:8080 --protocol=http -w small_server

source venv3/bin/activate

python --version

python3 --version

sudo apt-get install build-essential libssl-dev libffi-dev python-dev

/usr/bin/python3

https://www.youtube.com/watch?v=QksMS15-5Yc