But it’s just a piece of software like any other – installation and management can sometimes be complex. With the entry-level and user-friendly programming language Python, you can code almost any imaginable application. Here we will show you that along with steps to update-alternatives for selecting the default Python version on your Linux. altinstall builds specific version of python without overwriting your default version so that you can use multiple version of python.Although the latest version on Ubuntu 20.04 of Python is 3.x, however, we still can install Python 2.7 from its official repository. Reason: On Unix and Mac systems if you intend to install multiple versions of Python you must take care that your primary python executable is not overwritten by the installation of a different version. Refer here for more details on -enable-optimizations Step we all are waiting for Here we have added a new flag -enable-optimizations This sets the default make targets up to enable Profile Guided Optimization (PGO) and may be used to auto-enable Link Time Optimization (LTO) on some platforms.

I will be installing it from /usr/src but you can use any location of your choice cd /usr/src sudo wget Įxtracting downloaded package sudo tar xzf Python-3.6.9.tgz Compiling Source cd Python-3.6.9 sudo. Start with changing the directory and downloading source code from python. Install essential dependencies required for building library sudo apt-get update sudo apt-get install -y build-essential checkinstallĪnd sudo apt-get install libreadline-gplv2-dev libncursesw5-dev libssl-dev libsqlite3-dev tk-dev libgdbm-dev libc6-dev libbz2-dev Lets Build Let’s start with a specific python version, I will be using Python 3.6.9 in this blog because on the previous system I was working on it. There may be different libraries which you are trying to install which depends on Python 3.6. The reason behind this was Ubuntu 20.04 comes with built in python version 3.8.2 whereas Ubuntu 18.04 comes with Python 3.6.x Unfortunately, I faced a dependency issue. I faced the same issue when one of my development environment required a library which I tried to install using the built-in python. If you have upgraded your operating system and wandering why some libraries which were easily install-able on Ubuntu 18.04 are not getting installed on 20.04.

PS: Apart from users facing dependency issues ,this blog is for anyone who would love to try installing python from source code on any Linux based operating systems Build your favourite language on your favourite operating system

Install python on ubuntu 20.04