Python Installation & Setup Tutorial - Practical Guide
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Python Installation & Setup Tutorial – Practical Guide For FREE

Last updated on 19th Jul 2020, Blog, Tutorials

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How to Install Python (Environment Set-up)

In this section of the tutorial, we will discuss the installation of Python on various operating systems.

Installation on Windows

Visit the linkhttps://www.python.org/downloads/ to download the latest release of Python. In this process, we will install Python 3.6.7 on our Windows operating system.

installation on windows.

Double-click the executable file, which is downloaded; the following window will open. Select Customize installation and proceed.

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    install python.

    The following window shows all the optional features. All the features need to be installed and are checked by default; we need to click next to continue.

    optional features

    The following window shows a list of advanced options. Check all the options which you want to install and click next. Here, we must notice that the first check-box (install for all users) must be checked.

    Advanced options.

    Now, we are ready to install python-3.6.7. Let’s install it.

    setup progress

    Now, try to run python on the command prompt. Type the command python in case of python2 or python3 in case of python3. It will show an error as given in the below image. It is because we haven’t set the path.

    python command prompt

    To set the path of python, we need to the right click on “my computer” and go to Properties → Advanced → Environment Variables.

    click on my computers and go to variables
    System properties.

    Add the new path variable in the user variable section.

    Environment variables

    Type PATH as the variable name and set the path to the installation directory of the python shown in the below image.

    new user variable names

    Now, the path is set; we are ready to run python on our local system. Restart CMD, and type python again. It will open the python interpreter shell where we can execute the python statements.

    How to Install Python3 on MacOS

    Introduction

    Python is a high level, dynamic, general purpose language. It was developed by Guido Van Rossum in 1991. Python’s syntax allows developers to use fewer lines of code than any other programming language. It basically focuses on the code readability of program. Python 2.7 is installed by default on MacOS but we can install other versions like python 3.5 and 3.6.

    In this tutorial, we are learning how to install Python 3.6.3 on the MAC Operating system.

    Prerequisites

    • MacOS
    • Login as an administrator on terminal

    Installation

    There are following steps which are used while installing Python3 on MacOS.

    1) Checking python’s version on the system

    We can check which version of the Python is currently installed on our system. Generally, Python 2.7 is installed by default.

    Let’s see how can we do it.

    1. $ python -version    
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    python version.

    It shows Python 2.7.10 is installed on the computer which is quite often.

    2) Download Python 3.6.3

    In order to install Python 3.6.3, we must download the latest version from its official website https://www.python.org/downloads/ . The file is downloaded in .pkg format which can be directly installed by using Installer command.

    3) Install Python 3.6.3

    Since the downloaded file already is in .pkg format hence no mounting is required and We can use installer command to install Python 3.6.3.

    Let’s see how can we do it.

    install python

    Since The installer is used with super user permissions hence sudo forces terminal to prompt the user to fill the admin password. The process installs the Python 3.6.3 to the root directory which is mentioned with the target option.

    4) Verify Python3

    To check which Python version is installed on the machine, we can use python -version command. Since by default installed version is Python 2.7.10 hence it shows python 2.7.10. but it gives us flexibility to check the version of Python 3 on our computer.

    Let’s see how can we use python 3 to check which version of python 3 is running.

    1. $ python -version   

    5) Working on Python’s script mode

    To work on Python command line, we simply type python3 on the terminal. Python shell open where we can run Python statements such as print statements as we did here.

    working on python's script mode

    To run a Python file (.py) on the terminal, we simply type the file name and the file will be interpreted.

    Well, we have installed Python3 on our MacOS.

    How to Install Python 3 on CentOS

    Introduction

    Python is a high level, dynamic, general purpose language. It was developed by Guido Van Rossum in 1991. Python’s syntax allows developers to use fewer lines of code than any other programming language. It basically focuses on the code readability of program. Python 2.7 is installed by default on CentOS but we can install other versions like Python 3.5 and 3.6. In this tutorial, we are learning how to install Python 3.6.3 on CentOS.

    Prerequisites

    • CentOS
    • Login as an administrator on the terminal
    • Yum must be configured on the system.

    Installation

    Installation includes following steps.

    1. Install IUS community Repository

    In order to install Python 3.6 on CentOS, we need to first install IUS community repository which provides extra packages for Enterprise Linux. Execute the following command to install IUS community repository.

    1. $ sudo yum -y install https://centos7.iuscommunity.org/ius-release.rpm   
    install centos7.iuscommunity

    2. Install Python 3

    Execute the following command to install python 3.6 on CentOS.

    1. $ sudo yum install python36u   
    install python 3

    3. Verify Python

    To verify if we have installed correct version of python, we just need to type python3.6 -V on the terminal. The command will show the version installed which is 3.6.4 in my case.

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    verify python

    4. Working on Python’s script mode

    Just type python3.6 on the terminal to enter the Python’s script mode. We can execute the python statements on this shell. Since, python 2 is by default installed on CentOS, hence typing python on the terminal takes us to the python2 shell, hence we have to type python3.6 to work on the desired python shell.

    working on python's script mode

    Execute the valid python statements which get interpreted and show the desired output on the terminal as shown below.

    execute the valid python statemts.

    Hence, we have installed and get started with Python 3.

    How to install Python on Ubuntu 16.04 LTS?

    Introduction

    Python is a high level, dynamic and general purpose programming language. It was designed and developed by Python Software Foundation.

    Python is a cross-platform language and was first released on 20, February 1991.

    In this tutorial, we are working on the installation process of Python that includes the following steps.

    Although Python 2.7 is installed by default in Ubuntu, but we can install other Python versions like python3.

    To install python3, just type the following command in the terminal and it will be installed automatically.

    Python Installation

    1) Update the APT Repository

    1. $ apt-get update  

    2) Install Python

    1. $ apt-get install python3.6  

    2) Verify Python

    When we type python it shows default installed python that is 2.7.

    1. $ python  
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    verifying python.

    For Python3 type the following command, then it will show the other version as well.

    1. $ python3  
    type commands.

    Well, on the basis of these commands, we can test application for both Python versions.

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