Install Python 3 in Ubuntu (Linux based)
In this video, we will learn how to install Python 3 on Ubuntu Desktop Operating system, using two most popular methods.
In the first method, we will use Ubuntu's default package manager called "APT" to download and install from a Package repository. This method is preferred to setup Python, on a development machine.
In the second method, we will download the source files from PSF's python.org, compile them and build binaries. This method is preferred to setup Python on a secure and critical environment, like Production Server.
Now there are two ways to proceed from here. You can just pick a method & use the commands provided below. Just copy, paste and run them in your terminal one by one, and you will have a working setup on your system. You can do this, if you have some basic understanding about how Linux based systems work.
But if you new to the Linux world, then I strongly recommend you to go through the full video. Because we will touch and discuss lot of things in there while giving you a rundown of all the commands used in the process. We will learn about APT package manager, repositories (repos), environment variables, executables and lot more. I am hoping it would be worth investing your valuable time going through the full video.
Method 1 : Install Python 3 using APT package manager (From PPA)
i. Update the system's local repo list
sudo apt update
ii. Install a pre-requisite package called "software-properties-common"
sudo apt install software-properties-common
iii. Add deadsnakes PPA to the system's repository list
sudo add-apt-repository ppa:deadsnakes/ppa
iv. Again update the system's local repo list
sudo apt update
v. Install latest patch version of Python 3.10
sudo apt install python3.10
vi. To verify installation of Python 3
python3.10 --version
Method 2 : Install Python 3 from source files ( From PSF's python.org)
i. Update the system's local repo list
sudo apt update
ii. Install supporting softwares (packages)
sudo apt install build-essential zlib1g-dev libncurses5-dev libgdbm-dev libnss3-dev libssl-dev libreadline-dev libffi-dev wget
iii. Create a directory
mkdir /tmp/python
cd /tmp/python
iv. Download the Latest Version of Python Source Code
wget https://www.python.org/ftp/python/3.1...
v. Extract compressed files
tar -xvf Python-3.10.5.tgz
vi. Configure & Optimize Python for building
./configure --enable-optimizations
vii. Build Python binaries
make -j 8
viii. To install as a second instance of Python
sudo make altinstall
ix. Verify Python Version
python3.10 --version
Python Specific commands :
1. To check version of Python :
python3 --version
2. To enter into the Interactive mode (REPL) of Python :
python3
3. To quit from the Python terminal :
quit()
exit()
Keyboard shortcut : Ctrl + Z
Basic Linux/Unix commands :
1. To clear the terminal
clear
2. To create a new directory :
mkdir directory-name
3. To change working directory :
cd directory-path
4. To print out the value stored in a variable like PATH :
echo $PATH
5. To create an alias to an executable :
alias alias-name=exe-file-name
6. To check the location (directory) in which an executable is located :
which exe-name
type exe-name
7. To open up the terminal :
Shortcut : Ctrl + Alt + t
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