Odoo: Upgrade your version to 13 in Ubuntu 16.04

1. To configure v13 install Python v3.7 and below require the library in ubuntu 16.04,  Just copy and paste below command into the terminal.
sudo apt-get install -y build-essential checkinstall libreadline-gplv2-dev libncursesw5-dev libssl-dev libsqlite3-dev tk-dev libgdbm-dev libc6-dev libbz2-dev zlib1g-dev openssl libffi-dev python3-dev python3-setuptools wget

2. Build it.
mkdir /tmp/Python37
cd /tmp/Python37

3. Pull python 3.7 and Install it.
wget https://www.python.org/ftp/python/3.7.0/Python-3.7.0.tar.xz
tar xvf Python-3.7.0.tar.xz
cd /tmp/Python37/Python-3.7.0
./configure --enable-optimizations
sudo make altinstall

4. Clone Odoo v13 repository from git.
git clone https://github.com/odoo/odoo.git --depth 1 -b 13.0 --single-branch

5. Install the required library for Odoo v13 under the pulled odoo git repository.
sudo python3.7 setup.py install

Thanks