Install python 3.6.4 on ubuntu 14.04

Install_python3.6.4

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* For the Ubuntu 14.04 system, it is not easay to install python 3.6 and make pip3 work using the python3.6.4 path. If installed from the repository with ppa:jonathonf/python-3.6,
* there are always problems to use pip3 to call python 3.6.4. So this gist will help to solve such problems.
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sudo apt-get install build-essential checkinstallsudo apt-get install libreadline-gplv2-dev libncursesw5-dev libssl-dev libsqlite3-dev tk-dev libgdbm-dev libc6-dev libbz2-dev
cd ~
sudo wget https://www.python.org/ftp/python/3.6.4/Python-3.6.4.tgz
sudo tar xzf Python-3.6.4.tgz

cd Python-3.6.4
sudo ./configure --enable-optimizations
sudo make altinstall

sudo ln -s /usr/local/bin/python3.6 /usr/bin/python3.6

sudo -H pip3.6 install --upgrade pip

python3.6 -V # check python version

pip3.6 -V # check pip3.6 version

pip3 -V # check pip3.6 versio