DevOps Prerequisite (Part 3): Application basics (NodeJs & Python)

NodeJs
Earlier we had this as a website using HTML and CSS:

But now we have this one:

JavaScript (Js) made this difference.

Here NodeJs is server site JavaScript environment

This is how we can install nodeJs in centos:

NPM (Node Package Manager)

So, nodejs and npm is not same but npm manages nodes .

Modules

Python

Versions:

This is how this code works:

PIP (Python package manager)

Installing something using pip does this:

Here we have 2 python versions enabled here and we found out that currently pip is enabled on version 2.
So, if we install this flask package, we will create this file under this.

Checking paths :

Importing python packages in to codes:

Run required all files using a txt file or manually.

You can manually installed dedicated versions too.

You can also upgrade and delete them.

Moreover, these are other ways to run python (.py) files.