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What is Python?

By Priya PedamkarPriya Pedamkar

Home » Software Development » Software Development Tutorials » Python Tutorial » What is Python?

What-Is-Python

What is Python?

It is a programming language developed by Guido van Rossum, which is interpreted, offers high-level features, and incorporates characteristics of a general-purpose programming language. Its structure is based on garbage-collection and dynamic typing, supporting multiple programming paradigms such as object-oriented, functional, and procedural programming. These technical aspects render it a dynamic character and allow programmers to leverage it for small as well as large-scale real projects.

Understanding

As per the above answer, we can see that we have used two keywords while defining it. So, let’s first understand the meaning of those first two keywords.

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1. High –level Language

This is called a High –level language because it is very farther away from Machine level language (which consists of 0’s and 1), and it’s difficult to code. So, it becomes difficult to code, whereas this is easily readable, so it is very farther away from Machine level language. So it becomes a high-level language. The high-Level language syntax is more readable as compared to low-level language. One more thing that I would like is when we write this, it is not a compiled language but an interpreted one, which means it has to be run by another program, in this case, an interpreter, not by the processor, unlike C language which is run directly by the processor.

2. Object-Oriented Programming Language

It is an object-oriented programming language which means it works on objects. So what is an object? For example, Tiger is an object whose color and age are its attributes and hunting and reproducing its behavior. So, as shown in the above example, an object has two characteristics: attributes and behavior. So, there are some basic principles of OOPs as described below:

  • Inheritance: In this case, a child class can use the parent class’s behaviour and attributes.
  • Encapsulation: Hiding the private details of a class from other objects.
  • Polymorphism: Using a common behavior/operation in different forms for different inputs.

As you can see, I have used the keyword class above, so what does class mean?

A class is a blueprint of an object. It contains all the details of an object, and the object is an instance of a class. When a class has defined, the description of the object is defined, which means no memory or storage is allocated.

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How does Python make working so easy? / Why do we need it?

The reason why it makes working so easy is because of its simple syntax and readability of code. Unlike other programming languages like C, it has much readable and concise syntax, making it easy for beginners to master the concepts and reach an advanced level. For example, even if you want to print your name, you have to write around 7 lines of code in C#, but with python, that can be done in one line only, making a huge difference and giving an advantage over other languages.

Top Python Companies

Top-Python-Companies

Let us discussed a few companies which are actually using this:

1. Google

Google has been a supporter of python for a long time. Even if scripts were written for Google in Perl or bash, they were re-written in Python because it is easy to write, deploy and maintain. It is now official Google’s server-side language, the other being C++ and Java.

2. Facebook

Facebook also uses Python to a great extent making it the third most popular language at the social media giant, just behind C++ and PHP. Facebook has published numerous open-source projects written for Python 3.

3. Instagram

In 2016, the Instagram Engineering team announced that they were running the world‘s largest Django Framework, which is written in Python. Instagram’s team has invested time and resource in keeping their python development viable (approx 800 million monthly active users).

4. Quora

The huge crowdsource questions and answer platform use Python because of its ease of writing and readability.

5. Netflix

It uses mainly for data analysis for recommending and suggesting users with shows and movies. The main reason for using it is an extremely active development community.

The above companies are some of the big companies using Python.

What can you do with Python? /Where should we use it?

So, now the bigger question is what we can do with it or rather where can we use it?

The answer to this question is that it can be used almost everywhere. Here are a few areas where you can use it:

1. Python for Web development

Since it is an Object-Oriented Programming Language So, like other Object-Oriented Language, It can be used for Web Development, and also, it’s easy to syntax and has better readability. Django and Flask are the two most popular Python Web Framework.

2. Python for Scientific development

We can use this for scientific development as it has a SciPy library, a numerical computation library numPy, and it also has Matplotlib, which has a 2D plotting library for visualization. It can install the MATLAB Engine API so that it can interact with MATLAB as a computational engine. It is also a highly extensible language. It can use a web front end which means it is a web framework like Django, and flask can use Python as an API with a web front end.

3. Data Science and Analysis

It is one of the most important features or area which swings the meter in favor of Python. It can be used to create machine learning algorithms as it can use a sci-kit library. We can build all types of models, such as Linear Regression, Random Forest, and many more even libraries like tensor flow, making it easy to create deep learning models. The popularity of this has risen multifold due to its use in Machine Learning and AI.

Working

So here we will talk about how to start with python. We will be using Jupyter Notebook. So first, we shall install Jupyter itself. For that, first, we should install Anaconda. My recommendation would be downloading Anaconda’s latest version with Python 3. Once you install Anaconda, you could easily open Jupyter Notebook from there.

The below screenshot shows how a Jupyter Notebook looks.

Jupyter Notebook

So the highlighted box that you see is called a cell. Here we write the code or instructions that we want the kernel to execute.

After writing the code, you can press the play button on the toolbar to run the specific cell. It is very simple.

1. Example, if we have to add two numbers, a and b, its syntax is as follows:

a=10
b=20
c= a+b
print(c)

The screenshot below shows the same in Jupyter:

Jupyter example 1

2. For mathematical and numerical computations, we can import libraries like numpy and pandas libraries for working on datasets. The syntax for that is:

import numpy as np
import pandas as pd

Below is the screenshot for the same:

Jupyter example 2

3. Next, we can see how to build functions. Just like other languages, we can also build methods then call them later on in the program. The following example is to show how to create a Fibonacci series function for the first 100 numbers

def fib(p) :
a, b =0,1
while a< p :
print(a, end=’ ’)
a , b= b, a+b
print()

We can call the function by using fib(100)

Here is the Screenshot of the above code

Jupyter example 3

4. Next, we will see how to create conditional flows like if and if-else as there are very important for any programming language. Here is the sample code to create a conditional flow, and we are going to take input from a user using the input statement:

age = int(input(“Enter your name: ”))
if age <12:
print(“You are a kid”)
elif age in range(13, 20):
print(“ You are a teenager”)
else:
print(“You are a adult)

5. Next, we will see how to create a for loop in this with an example. For loop is basically used when we know the number of iterations. The below code is to perform the addition of the first ten numbers using for loop. Here the number of iterations is 10.

sum =0
for i in range(10):
print(i)
sum=sum +i
print(sum)

In the above code, a sum is used to store the sum of all the numbers after each iteration and range(10) means it will start from 0 till 9, not include 10. The answer should come to 45.

6. We also have a while loop. In the below example, we are going to print I as long as it is less than 10, so here, if we see, we do not know exactly the number of iterations. So, we also called the while loop has an entry controlled loop.

i = 1
while i<10:
print(i)
i= i+1

Required Skills

The skills required for a good developer is the same as any other developer. The person should have a good knowledge of OOPs(Object Oriented Programming) concepts so that he can play with an object in python, and then only he can use the full potential of Python. He should have good knowledge of those frameworks like Django and Flask, depending on your technology stack. The person should also have a basic understanding of front-end technologies like HTML, CSS, and JavaScript. There should be familiarity with event-driven programming in Python. A basic understanding of the database is required as database knowledge helps in writing proper queries.

The unique feature that makes it stand ahead of other languages is its use in analytics, data science, and AI. To be good in those fields using python, one must have good mathematical knowledge, especially in statistics a; good domain knowledge also helps in choosing the right model for fitting it into right kind of data.

Advantages

There are numerous advantages. Few are mentioned below:

  • Extensive Support Libraries: It provides large libraries which range from numerical computations to deep learning, Machine Learning, and Visualizations. Most of the programming task is already done in the libraries, Users just has to import the libraries and pass parameters based on the requirements, and it really reduces time and length of the syntax also reduces.
  • Integration Feature: It has powerful integration capabilities with front-end as well as other server-end technologies. It can directly call C and C++ or Java through Jython.
  • Productivity: Due to its strong integration features, unit testing framework, it increases the productivity of the applications. It is a good option for building scalable multi-protocol applications.

Scope

Its scope for now and the future is enormous. Almost every company is using it in some way or other in their business. It has scope in Web Development, Data Science, Data Analysis, AI, Machine Learning. The scope of Python in Data Science/Analysis is much more as compared to other programming languages.

Who is the right audience for learning Python technologies?

The right Audience for this is anybody with an appetite to learn and having a basic knowledge of OOPS. Freshers, especially from streams other than computer science, will find the much easy to understand that, for example, C++.

How will this technology help you in career growth?

Learning this language gives you an extra advantage in your carrier. It is a versatile language, and its preferred use in scientific and numerical computations and data analysis and machine learning gives it an edge over others.

Conclusion

To conclude, I would say though this was created in 1990, It is very much in use today, and its use is going to further increase, especially in data analysis/data science and machine learning.

Recommended Articles

This has been a guide to What is Python?. Here we discussed the basic concept, working, required skills, top python companies, along with advantages and scope. You can also go through our other suggested articles to learn more –

  1. What is the Tableau Server?
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Python Tutorial
  • Basics Part I
    • Introduction To Python
    • What Is Python
    • Careers in Python
    • Advantages of Python
    • Uses of Python
    • Python Features
    • Python Fast And python psyco
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    • Benefits and Limitations of Using Python
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