Learn Python Programming from Scratch 2021

Python is most powerful and widely used programming language of 2021. Over the past few years, it has affected its use to the next level. Python is now ubiquitous from web development to artistic understanding. See here how to read the Python Program.

Python is slower than other programming languages such as C ++ and Java, but nevertheless, it is the first choice for Data Science and Machine Learning, the reason being simple syntax. Python is very easy to use and learn. For example, if you want to print a Hello World statement on Java or C ++ you have to write 5 to 8 lines of code but in python, with one command, you can print Hello World.
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Here at ProgrammingBuzz we will take you on a complete Python Programming language journey.

What is Python?

Python is the language of high-performance, robust, and object-oriented programming language. Advanced programming means that it is usable and all the code written in it, can be understood by people, and at each meeting we use English words to write Python programs. Like Java and C ++, Python also supports Object-enabled applications.

Python was developed by Guido Van at Centrum Wiskunde & Informatica in the Netherlands and was released in 1991, although the python project was started 10 years ago since its first release. Python is designed as an interpreter and follower of the ABC program language that was able to manage without the interaction and interaction of the Amoeba Operating system. It matters after how the python gets its name. Guido Van raises Python as the name of his editorial language because he is a big fan of the British comedy group Monty Python.

Key Benefits of Python

    It is very easy to read because of its simple syntax
    It involves encoding a little
    It has thousands of libraries
    Open programming language
    Use retreat instead of brackets

Python types

Python comes with 2 versions - Python Version 2.x and Python Version 3.x, both open source and free to use.

    Python 2 was released in 2000
    Python 3 was released in 2008

There has always been controversy over Python 2 vs 3 but it is not yet clear. Developers use version 3 over 2 because V3 is more useful than V2 in the real world app.
Key features supported by Python

1. Easy to read

Unlike other advanced languages such as C ++ and Java, Python is much easier to learn. The syntax is so simple it won't take you long to understand it.
2. Open source and source documents

The language of the open source program that provides good writing so that you can read it very quickly.
3. A Growing Society

It has the fastest growing community in the world, contributing to its development.
4. Carrying

You can easily move a python program from one program to another and you do not need to make any changes to it. Although the windows do not come with a built-in Python interpreter, the new Mac offers a built-in Python interpreter.
5. Dynamic Type

Python is a Dynamically Typed programming language which means you do not need to announce the type of data for each variety in Python.
6. Large number of libraries

One of the main assets of python is its large library of everything. If you want to keep up with web development using python, you have many options like Django, Bottle, Flask, etc. If you are looking for scientific and mathematical computing in your app, that python gives you Orange, SymPy, Numpy, etc. and if you are interested in graphical user interface graphics that have Pygame, Panda3D libraries.
7. Translated language

Python has an interpreter that also handles memory management for garbage collection. The interpreter really helps to find the error in a particular line.
8. Planned language

Python supports the concept of Object-orientation, which helps to solve complex problems by separating the problem into smaller sets.

Real World Applications

Used for desktop application development
Python is famous for its Scientific and Computational Application program
Used to design games
You can use python web frameworks to design web applications
Many popular websites like Reddit were rewritten on Python in 2005
Instagram also uses Python
It is used for the development of new programming languages

Reason to learn python

Why should a beginner choose Python as his or her first programming language?

The answer is simple Python is a very simple and easy-to-read programming language. No matter if you have some knowledge of other programming languages or not, it would not be difficult for anyone to understand Python.

In some programming languages for each variable, you have to announce the type of data, but in python, it is built on the ingenuity of understanding what the variables are of the data type.

Aside from its integration and coding, it has a great community around the world, so whenever you find any problem regarding your python code or need advice, feel free to ask questions in public over the stack, GitHub, Quora, etc. , there are many experts out there who can help you whenever you are stuck.
Use the Python Interpreter on your System

Python is available for Mac OS, Windows, and Linux.
Install Python on Mac OS X

Click here to download the Software Python version. Now click on Download Python 3.7.3 (This version may be different for you).
After downloading, open the package and follow the instructions and install it.
If you have a password on your system so before installing python it will ask for a password, please provide a password and complete the installation process.
When the installation is complete it will show you the pop-ups for successful installation.

Install Python on Windows

Click here to download the latest version of python3. Now click on Download Python 3.7.3 (Type may vary from you).
After the download is complete double-click on the downloaded file.
A pop-up input icon will be displayed on your screen click the Yes button and follow all the instructions and then click on the accept button.
When the installation is complete go to Prompt command (press window + r and type cmd) and type python into your Prompt command.
If it shows any error or message such as "'python' is not known as internal or external command", type py instead of python, it will solve the problem.

HEllo World-First Program

No matter what language you learn about the program, just start your first program by printing HelloWorld, just like hello whenever you choose a phone.
In python, if you want to print Hello World you just need to type one line and the code says
Print ("Hello World")
To write and use code you can use python IDE's.
Let’s move on to a simplified system and we’ll discuss how the code works again?

#FirsCode.Py

a = 20
b = 30
variation = b-a
print (different)

#Releasing

10

Behind the code

(a = 20) In the code above on the first line, we have given the number 20 of the variable a, where is a integer, although we do not define a type of variable a or b here where a powerful python asset works in a python, we do not define a type of variable data. Now the number is 20.

(b = 30) Here we assign the number 30 to b, now b saves the value to 30.

(diff = b-a) here we present a new alternative that stores the value of b-a (30-20)

print (different) We finally printed the diff value and got 10 result as a result.
Points to Keep in Mind

In python when we write a conditional statement, we declare it in a colon (:) and all definitions of this statement go into induction.

e.g.

>>> a = 10
>>> b = 20
>>> uma> b:
>>> Print ("This statement is in the middle of a statement and use the reference here,")
>>> Print ("this statement is part of the Statement If")
>>> Print ("this statement is not part of the statement")

Learn Python Programming from Scratch 2021 | What is Python?