Python Beg

The place of the python beginner. We all start with nothing. Practice is the key.

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Open python

Simply type python on the terminal or the console than press on enter.

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Running Python in the browser

In short, If you:

don’t feel like installing Python (yet),

would like to get started quickly,

first want to try if Python is for you, before installing it,

you’re in luck! You can get started right away without the need to install anything.

Please note that:

This online Python interpreter intentionally has limited resources.

 It’s not interactive. You can’t use input().

Link of the online inerpreter:  https://crumb.sh/

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Install Python on Linux

There are several ways to install Python on Linux, that is if you need to install it at all!

Check what’s installed first

Most Linux distributions include Python. Many will include both Python 2 and Python 3.

If you enter python --version on the command line, you’ll see the version number. It’s probably version 2.7:

$ python --version

Python 2.7.16

You don’t want Python 2, but some OS’es still ship with it, unfortunately.

Now try python3 --version. If you get a “command not found,” you need to install Python 3. If your output looks similar to this, you’re in luck:

$ python3 --version

Python 3.8.5

Using a package manager

Depending on the distribution of Linux you are running, you can install Python with the default package manager: Yum, APT, etcetera. You’ll need to find out for your specific Linux distribution which package manager is used and how to use it.

If you’re on Ubuntu, Linux Mint, or Debian, you can install using apt:

$ apt install python3

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Installation on MacOS

Installation on MacOS

On most versions of MacOS before Catalina, a distribution of Python is already included. Unfortunately, it’s almost certainly an old version, Python 2.7. Luckily, there are two ways to easily install Python 3 on a Mac.

Homebrew

First and foremost, I recommend looking into Homebrew. It allows you to install almost anything easily. The added benefits:

Homebrew packages are usually very up-to-date.

It’s also easy to upgrade to newer versions later on.

However, you do need to be comfortable with using a command-line shell to use Homebrew. If that’s completely new to you, I recommend the next option for now: using the official installer.

If you chose the install Homebrew, installing Python on MacOS is as easy as:

$ brew install python

Official installer

Alternatively, you can download an installer from the Python download website. It’s easy and works like the installation of any other MacOS software program. The downside to this approach is that you won’t get automatic updates. Just like with Windows, you should make sure that Python is added to your system’s PATH.

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Install Python on Windows

There are two methods you can choose from on Windows.

Using The Microsoft Store

Microsoft hosts a community release of Python 3 in the Microsoft Store. This is the recommended way to install Python on Windows because it handles updates automatically and can be uninstalled easily too.

To use this method:

open the Microsoft store and search for Python

Pick the newest version and install it

With the official installer

You can download a Python installer from the official Python download website too. This method does not give you automatic updates, and I would recommend it only if you don’t have access to the Microsoft store. When you use this installer, make sure you mark the checkbox that says ‘Add Python to PATH’:

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What is Python used for?

People use Python in many places. Its rich base library makes it excellent for all kinds of little helper scripts. But it scales just as well to large systems. To illustrate: the original creators of YouTube used Python for the most part! Dropbox, as far as I know, is primarily written in Python as well. And did you know Instagram’s entire backend and website are written in Python as well?

You can use Python to automate tasks, perform calculations, create user interfaces, create website backends, access databases, download information from the Internet, etc. It’s a versatile language that is easy to learn and write, and although perfect for beginning programmers, is just as useful and powerful for seasoned professionals.

Python is extremely popular in a quickly growing field of expertise called data science. Many data scientists use Python for their day-to-day work. And these are just a few examples. If you start looking closely, Python is very ubiquitous.

Many people say that Python comes with batteries included. It’s a fun way of stating that it includes a comprehensive base library. In addition to this, you can find hundreds of thousands of external packages contributed by the enormous community. You’ll find supporting base libraries and packages for pretty much anything you want to accomplish.

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What is Python?

Let’s start by defining exactly what Python is. Python is a computer programming language. Or, in other words, a vocabulary and set of grammatical rules for instructing a computer to perform tasks. Its original creator, Guido van Rossum, named it after the BBC television show ‘Monty Python’s Flying Circus.’ Hence, you’ll find that Python books, code examples, and documentation sometimes contain references to this television show.

Example of python code :

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Welcome Print(’Hello, World !!’)