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How to Install Python 3 on CentOS 7


How to Install Python 3 on CentOS 7

This instructional exercise will manage you through introducing Python 3 on a CentOS 7 framework utilizing the Software Collections (SCL) close by the conveyance default Python form 2.7. We will likewise tell you the best way to establish a Python virtual climate. 

Python is perhaps the most well known programming dialects on the planet. With its straightforward and simple to learn punctuation Python is an incredible decision for tenderfoots and experienced designers. Python is a very adaptable programming language. You can utilize it to do nearly anything you need, compose little contents, assemble games, create sites, make AI calculations, dissect information, and the sky is the limit from there. 

Numerous mainstream applications and sites, including YouTube, DropBox, Reddit, Quora, Instagram, Pinterest have been created utilizing Python. 

Python 2 help closes in 2020. Python 3 is the present and eventual fate of the language. 

Enable Software Collections (SCL)

Programming Collections , otherwise called SCL is a network venture that permits you to fabricate, introduce, and utilize different renditions of programming on a similar framework, without influencing framework default bundles. By empowering SCL you will access the more up to date forms of programming dialects and administrations which are not accessible in the center archives. 

CentOS 7 boats with Python 2.7.5 which is a basic piece of the CentOS base framework. SCL permits you to introduce fresher renditions of python 3.x close by the default python v2.7.5 so framework devices, for example, yum will keep on working appropriately. 

To empower SCL, you need to introduce the CentOS SCL discharge record. It is important for the CentOS additional items vault and can be introduced by running the accompanying order: 

sudo yum install centos-release-scl

Installing Python 3 on CentOS 7

Since you approach the SCL vault, you can introduce any Python 3.x variant you need. At present, the accompanying Python 3 assortments are accessible: 

  • Python 3.3 
  • Python 3.4 
  • Python 3.5 
  • Python 3.6 

In this instructional exercise, we will introduce Python 3.6, which is the most recent adaptation accessible at the hour of composing. To do so type the accompanying order on your CentOS 7 terminal: 

sudo yum install rh-python36

Using Python 3

When the bundle rh-python36 is introduced, check the Python rendition by composing: 

python --version
Python 2.7.5

You will see that Python 2.7 is the default Python variant in your present shell. 

To get to Python 3.6 you need to dispatch another shell occasion utilizing the Software Collection scl device: 

scl enable rh-python36 bash

What the order above does is calling the content/pick/rh/rh-python36/empower, which changes the shell climate factors. 

In the event that you check the Python form once more, you'll notice that Python 3.6 is the default variant in your present shell now. 

python --version
Python 3.6.3

It is essential to call attention to that Python 3.6 is set as the default Python form just in this shell meeting. In the event that you leave the meeting or open another meeting from another terminal Python 2.7 will be the default Python adaptation. 

Installing Development Tools

Advancement apparatuses are needed for building Python modules. To introduce the important devices and libraries type: 

sudo yum groupinstall 'Development Tools'

Creating a Virtual Environment

Python Virtual Environments permits you to introduce Python modules in a detached area for a particular undertaking, as opposed to being introduced worldwide. Along these lines, you don't need to stress over influencing other Python ventures. 

The favored method to establish another virtual climate in Python 3 is by executing the venv order. 

Suppose you need to make another Python 3 venture called my_new_project inside your client home registry and coordinating virtual climate. 

To start with, make the venture registry and change to it: 

mkdir ~/my_new_project
cd ~/my_new_project

Initiate Python 3.6 utilizing the scl apparatus: 

scl enable rh-python36 bash

From inside the task root run the accompanying order to establish a virtual climate named my_project_venv: 

python -m venv my_project_venv

To begin utilizing the virtual climate, initiate it by composing: 

source my_project_venv/bin/activate

Subsequent to enacting the climate, the shell brief will be prefixed with the name of the climate: 

(my_project_venv) user@host:~/my_new_project$

Beginning with Python 3.4, while establishing virtual conditions pip, the bundle director for Python is introduced naturally. 


You should now have Python 3 programming climate set up on your CentOS 7 machine, and you can begin building up your Python 3 undertaking. 

You can likewise find out about how to introduce Odoo 11 on CentOS 7 and see an illustration of how to utilize Python 3 virtual climate to run Python programming on a CentOS 7 worker. 

In the event that you have any inquiries or input, don't hesitate to remark underneath.