Installing Python 3.6 on Ubuntu 16.04

1. install add-apt-repository

apt-get install software-properties-common

1. now add repository for Python 3.6

sudo add-apt-repository ppa:jonathonf/python-3.6

sudo apt-get update
sudo apt-get install python3.6 libpython3.6-dev
apt remove python2.7

rm /usr/bin/python3
ln -s /usr/bin/python3.6 /usr/bin/python3

1. pip

apt install python3-pip

python3 -m pip install -U pip setuptools

1. Say Steem

error:

src/scrypt.c:27:20: fatal error: Python.h: No such file or directory

This can be avoided by

apt-get install libpython3.6-dev

1. Installing steem libraries etc

python3 -m pip install -U pip setuptools steem numpy