List of Top 11 Programming Languages in 2021

  1. JavaScript
  2. Python
  3. Java
  4. Go
  5. TypeScript
  6. C++
  7. Ruby
  8. PHP
  9. C#
  10. C
  11. SQL

What is programming Languages?

  • A programming language is a set of words, symbols and codes that enables human to communicate with computers.
  • It is a set of rules that provides a way of telling a computer what operations to perform
  • It is a set of rules for communicating an algorithm
  • It provides a linguistic framework for describing computations

Use of Programming Language?

  • The programing language enables us to write efficient programs and develop online solutions such as- mobile applications, web applications, and games, etc. 
  •  Programming languages are used to facilitate communication about the task of organizing and manipulating information, and to express algorithms precisely.

What are the types of programming language?

There are two types of programming languages, which can be categorized into the following ways:

  1. Low level language

(a)  Machine language (1GL)

(b)  Assembly language (2GL)           

2. High level language    

(a) Procedural-Oriented language (3GL)

(b)  Problem-Oriented language (4GL)

(c)  Natural language (5GL)

  1. Low level language :This language is the most understandable language used by computer to perform its operations.

It can be further categorized into:

a) Machine Language (1GL) : A first-generation programming language (1GL) is a machine-level programming language. This makes the language suitable for the understanding of the machine but far more difficult to interpret and learn by the human programmer.

b) Assembly Language : An assembly language is a type of low-level programming language that is intended to communicate directly with a computer’s hardware. Unlike machine language, which consists of binary and hexadecimal characters, assembly languages are designed to be readable by humans.

 2. High level language: A high-level language is any programming language that enables development of a program in a much more user-friendly programming context and is generally independent of the computer’s hardware architecture.


High level language can be further categorized as:

(a) Procedural-Oriented language (3GL): With a procedural language, often called a third-generation language (3GL), a programmer uses a series of English-like words to write instructions. While Programmers use an object-oriented programming (OOP) language or object-oriented program development tool to implement objects in a program.

(b) Problem-Oriented language (4GL): It allows the users to specify what the output should be, without describing all the details of how the data should be manupulated to produce the result. This is one step ahead from 3GL. These are result oriented and include database query language.

(c) Natural language (5GL): A fifth-generation programming language (5GL) is any programming language based on problem-solving using constraints given to the program, rather than using an algorithm written by a programmer. Most constraint-based and logic programming languages and some other declarative languages are fifth-generation languages.

 Which programming Language is most popular?

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What is python?

Python is a programing language that combines features of C and Java. Python is an object-oriented, with high-level programming language with dynamic semantics. It’s a high-level built in data structures, combined with dynamic typing and dynamic binding,  that makes it very attractive for fast Application Development, as well as for use as a scripting or glue language to connect existing components together.

Features of python

  • Easy to code
  • Free and open Source
  • Object-Oriented Languages
  • GUI Programming supports
  • High-level Language
  • Extensible Feature
  • Large Standard Library
  • Dynamically Typed Language

Why Should You Learn Python?

Nowadays, Python has become one of the fastest growing and most popular programming languages in the world. Is it a good choice for your next project though? Python is versatile, it is easy to use and develop.

Moreover, it has a very vibrant community. You can easily find support from the best minds in the field. It is well-loved among both experienced programmers and beginners alike. There are many reasons to learn Python. Some of the reason to learn Python are:

  • Versatile, easy to use and fast to develop
  • Open source with a vibrant community
  • It has all the library required
  • Great for prototype (You can do more with less Coding)
  • Fast Development speed
  • Easy maintenance
  • Not native to mobile environment
  • Learning Python will keep you relevant
  • Python is similar to English
  • Python is widely used

How Long Does it Take to Learn Python?

If you’re looking to become a Python expert you have a much longer path ahead of you. In this article, we’ll just look at how long it takes to get a basic, well-rounded understanding of the Python language.

On average, for beginners it takes about 10-12 hours to learn the basics. This will get you enough to understand most lines of code in Python. If you plan on getting into data science or another specialized field, counting in months and years is more appropriate. If you spend your 5 to 6 months to this language, then this matter of time suited those who pan full time work in this.

To learn, plan is simple you should have to spend 2-3 hours a day on computer and practise it on daily basis. One day learn something and next day practise it with fully.

You may need to sacrifice the time you spend watching Netflix, but it’s well worth it for a stellar new career!

Career Opportunities in Python

Python is not only one of the most popular programming languages across the globe, but it is one that offers the most promising career opportunities as well. This demand for Python developers is increasing every year. There is a reason why this high-level programming language is so popular.

Python can be used in several areas, including testing, web development, app development and upgrades, and scriptwriting. If you acquire this skill, you will have more Python career opportunities than you can imagine.

Python Career Opportunities

So what are the options in front of you when you complete your Python learning? Here are a few job roles that you can fill:

  • Python Developer

This type of jobs you can except after acquiring the skills of python, you have always open position for Python Developer.

What does a Python developer do? 

  1. Building website
  2. Resolve problems related to data analytics
  3. Write codes that are reusable and efficient
  4. Optimize data algorithms
  • Data analyst

This particular job option is mainly for those who like to working with huge amounts of data and finding meaning in that data. This also a popular job role in this domain. There are many companies that are looking for people who can work with the large sets of data that they have access to.

  • Product Manager

Product managers comes with an important role to play in this domain when it comes to helping businesses to understand the market and why building one product will be better than building another. Data is a very important part of the work they do. They study the market, research for new features related to a particular product or category, and advocate the building of certain products with facts. 

  • Machine learning engineer

Nowadays requirement off this particular job role is by 330% in the last couple of years.

A machine learning engineer builds and trains machines, programs, and other computer-based systems to apply their learned knowledge for making predictions.

Why Python skill is essential for every Software Engineer?

Python is a very popular open-source software development language that offers enhanced process control capabilities. It is able to develop complex multi-protocol network applications

  • The career opportunities for skilled professionals are increasing significantly with huge scope for career growth.
  • The average salary of a Certified Python Developer is US$116,379 per year.
  • There are more Job opportunities for Python professionals in top MNCs when compared to other technologies.
  • IT Operations, IT Monitoring, IT Support, & Data Centre teams.
  • Professionals who aim to make a career in big data with Python, Professionals having experience of Programming, Software Testing Professionals, Software developers.

Python Job and Salary

This is the vast and most desire welcome opportunity provide to a Python skilled candidates.

If you are able to strike a balance, you will not have to think too much about your salary after that. You will have the opportunity to work with the world’s most popular names, such as Amazon, Accenture, Cognizant, Tata Consultancy Services Limited, and others. Your career will continue to grow as you gain more experience.

On an averagea senior software developer earn as much as Rs 2,000,000 per annum. Other hand Web developer with Python skills can also earn in the range of Rs 8, 00,000 per annum. Other related job roles include lead software engineer (up to Rs 2,000,000 per annum), data scientist (Rs 7,00,000 per annum), machine learning engineer (Rs 6,70,000 per annum), data analyst (4,17,000 per annum), and more. 

The popularity of python increased among developers by the fact that Python is used by some of the biggest names in the world – Facebook, Netflix, Google, and Spotify, amongst others. This points towards one thing – As a professional skilled in python, you will have your chance of working with one of your dream companies. 

To make you this clear we shared you some that that According to Naukri.com, there were more than 75,000 open jobs for Python developers in India at the end of 2021. Similarly, the open jobs for Python web developers were around 7000 around the same time.

Conclusion

In this Article, we all discussed on point of a career in python. We provided you the enough information about the salaries what you can expect to earn in different job roles with Python skills We also discussed the options that you can choose as a skilled Python professional depending on your interests.

If you are curious to learn about Python, and make a good career with this skill then I would suggest you please check out DevOpsSchool.com more information.

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$_GET and $_POST Variable in PHP

  • $_GET and $_POST is generally used in the forms to transfer data from one file to another file. Both the variables are kind of same except when we need to keep our data secure we use $_POST and generally in the form we use $_POST.

We will see the explanation by a example:

Form.html

Testform.php

In this form we have used “get” method and we will see the output below:

As we can see we have used the method “get” in the form and in the output page of testform.php we can see the input given, also with that in the URL box we can see the details which we have provided in the form.html.

If we use “post” method in the form.html we will see the difference below:

As we can see in the URL box there is no such details provided which we can see while using “post” method.

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Super Global Variables in PHP

  • What is Super Global Variable?

Super global variable is a variable which can be used in two different files for manipulation.

For example we have a variable “a” in File1.php and we need to print, edit or any manipulation needed to be done in the variable in File2.php then we have to use Super Global Variable as a variable in File1.php.

  • Types of Super Global Variable in PHP:-

– $_GET

– $_POST

– $_REQUEST

– $_COOKIE

– $_SESSION

– $_FILES

  • To see the use of variable $_GET and $_POST follow the link given below:

/https://www.scmgalaxy.com/tutorials/_get-and-_post-variable-in-php/

  • Use of variable $_REQUEST

 $_REQUEST can catch the data which is sent using both POST GET methods whereas $_GET and $_POST can catch the data which is sent by get and post.

  • Use of variable $_SERVER

When we use $_SERVER we can extract extra data from the client when the form is filled. Extra data in a sense we can extract:

– HTTP Connection

– Server Information

– Host Information

– URL Information

We can see it with the example given below:

Now when we insert the data in the form.html we will see the following information:

  • Use of $_COOKIE variable:

Cookies are small file that the server embeds on the user’s computer each time the same computer requests a page with a browser it will send the cookie too. With PHP, we can both create and retrieve cookie values.

To create a cookie we need to run the following command:

setcookie()

Syntax:

setcookie(name, value, expire, path, domain, secure, httponly);

In the syntax only the name parameter is mandatory rest other parameters are optional.

Example for creating a cookie:

  • Use of $_SESSION variable

For session variable refer the link given below:

How Session works in PHP

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How Session works in PHP

Session is a way to store information (in variables) to be used across multiple pages. We can see the architecture of session workflow below:

  • Initially we need to write the command session_start() to start a session.
  • Once we write the command server will check if there is a session available.
  • If there is no server then it will store a cookie in the client machine with the cookie name – PHPSESSID amd it will create a session id of 26 or 32 characters.
  • With that it will also store a file on server (Default Location – C:\xampp\tmp) with session id in the suffix.
  • If there is already a session in the client machine then it will show the variables stored in the session under (C:\xampp\tmp) the server.
  • Once we close the browser all the session ends.

Reference:

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Data types in PHP (Array)

In this tutorial we will learn about Array data type in PHP, before that you can see all the data types in PHP given below:

  • String
  • Integer
  • Float
  • Boolean
  • Array
  • Object
  • Null

In PHP we have a special data type where we can assign number of values in single variable using array.

For example: $a = array(10,20,30);

In PHP, there are three types of arrays:

  • Indexed array
  • Associative array
  • Multidimensional array

Indexed array:- PHP indexed array is an array which is represented by an index number by default. All elements of array are represented by an index number which starts from 0. PHP indexed array can store numbers, strings or any object. PHP indexed array is also known as numeric array.

Example:

Output:

We can also use <pre> tag to print both the key and value in the output.

Output:

Another way to write the array in PHP which shows the same output as above:

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Difference between Single quotes ‘ and Double quotes ” in PHP

In this tutorial we will learn about the difference in single quotes and double quotes. Theoretically if we understand then single quotes doesn’t parse the data and double quotes is said to be interpreted.

In simple words if we understand then if we write anything in double quotes then it passes the value in the variable whereas if we write anything inside single quotes then it passes the value as string. We will see it though example to make it clear.

Output:

It shows that if we write within the single quotes it doesn’t parse the data and shows the value as string.

  • One more thing we should know that we cannot use Single quotes within single quotes and Double quotes within double quotes.

This is a wrong way of using quotes and we will fetch an error if it is compiled instead of this we can use the below format:

  • To use double quotes within double quotes and single quotes within single quotes then we have to use skip “\”.

Reference:

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What is var_dump in PHP

Var_dump function is used to check the data type of a variable. In PHP we do not have to write the data type while declaring the variable so if we want to print the data type we will use “var_dump” function to see type of data of the variable.

For example:

Output:-

Here, we can see in the output that it has printed the data type of all the variables which we have used.

Reference:

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PHP Global and Local Variable

In this tutorial we will learn about declaring global and local variable in PHP.

Initially we will see what is local variable and global variable with examples.

Here if we see the variable is declared inside the function “local” so it will work inside the local function only until we return the value inside the function.

In this we can see that the variable “a” is declared outside the function local, so it won’t work inside the function until we call it.

If we see the output for this we will see an error since “a” is a local variable and it will not work beyond the function “test”.

Now in this code if we see, variable “a” is declared globally and we will get an error if we call it inside any function.

To execute the global variable in the function we need to use predefined variable “global” inside the function.

We will see now that it will return value inside the function as well as outside the function.

References:

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