If you’ve any idea or concept of application and you decide to build your application concept in best programming language, Python is on top of the table. But you may be asking yourself,

“What exactly can I use Python for?”

The app development market is greedy but flexible. Trends define the need, and needs define actual trends. Python is now a trend, no doubt about it. Python is also really friendly, thanks to its popularity and the helpful community.

Python is so good, rather than describing what it can do, it’s actually faster to say what Python can’t do. Python is a high-level general purpose programming language that gives multiple paradigms like object-orientation, and structural and functional programming for software development. It works on cross-platform operating systems and may be used across to develop a wide range of applications including those intended for image processing, text processing, web, and enterprise level using scientific, numeric and data from network. According to Stack Overflow, Python is the fastest-growing programming language in the world, and it will still grow even faster. It’s already well recognised as a really universal, versatile, stable, and easy to learn programming language.

The growth rate of python wasn't something easy to realise. There are various attributes of python programming tool which has provided it with a tremendous successful journey. Python features a major role in the latest technologies of current and future times like machine learning and artificial intelligence. 

Who uses Python

Python is used almost everywhere. Just take a glance at the following list (which isn't exhaustive). the purpose is that Python will apply to whatever you’re interested in, no matter what it is.

• In internet search: Google used Python everywhere in its early development phase.
• In Space: The International Space Station’s Robonaut 2 robot uses Python for its central command system. Python is planned to be used during a European mission to Mars in 2020 to gather soil samples.
• Physics Laboratory: Python helps understand the data analysis from some atom smashing experiments at the CERN Large Hadron Collider.
• In astronomy: The MeerKat astronomical telescope array (the largest astronomical telescope within the Southern Hemisphere) uses Python for its control and monitoring systems.
• In movie studios: Industrial Light and Magic (Star Wars geniuses) uses Python to automate its movie production processes. Side Effects Software’s computer generated imagery program Houdini uses Python for its programming interface and to script the engine.
• In games: Activision uses Python for building games, testing, and analysing stuff. They even use Python to search out people cheating by boosting one another.
• In music/video industry: Spotify music streaming service uses Python to send you music. Netflix uses Python to make sure movies play (stream) no end. Python is used a lot for YouTube.
• In medicine: The Nodality company uses Python to handle information that they use to search for a cure to cancer.

What to do with Python

With Python, you'll learn to create such things as a math trainer for practicing your times tables or an easy encryption (a secret code) program. And when you’ve honed your skills over time, there are other things you’ll be able to do, such as:

• Using Tkinter (or other widget sets), you can write user applications that use graphics rather than just text to interact with the user.
• You can extend other programs like Blender (a 3D modeling program), GIMP (a 2D photo-retouching program), and LibreOffice (office programs), among many others by writing custom scripts.
• You can write games with graphics using Tkinter or the Pygame or Kivy libraries.
• You can use the matplotlib library to draw complex graphs for your math or science courses.
• You can design a website using web frameworks that are based on Python like Django and Flask have recently become very popular for web development.
• You can use python libraries for machine learning, data science and data visualization.
• Using Python scripting you can writing small programs for design automate simple tasks.
• Using the openCV library, you can experiment with computer vision. People who are into robotics use it to help their robots see and grab things and to avoid obstacles when moving.

Whatever you want it to do, there’s a good chance someone has already written code to do it or to help you to do it yourself.

Application of Python

1. Web frameworks and web application: Python has been used to create a web frameworks including CherryPy, Django, TurboGears, Bottle, Flask etc. These frameworks provide standard libraries and modules which simplify tasks associated with content management, interaction with database and interfacing with different internet protocols like HTTP, SMTP, XML-RPC, FTP and POP. Plone, a content management system; ERP5, an open source ERP which is employed in aerospace, apparel and banking; Odoo- a consolidated suite of business applications; and Google App engine are some of the popular web applications based on Python.
2. GUI based desktop application: Python has simple and the ability to work on multiple operating systems which make it a desirable choice for developing desktop-based applications. There are various GUI toolkits available which help developers to create highly functional Graphical User Interface (GUI). The various applications developed using Python includes image processing, graphics design, games, scientific and computational application.
3. Enterprise and business application: With features that include special libraries, extensibility, scalability and simply readable syntax, Python may be a suitable coding language for customizing larger applications. Reddit, which was originally written in Common Lips, was rewritten in Python in 2005. Python also contributed in a very large part to functionality in YouTube.
4. Language developement: Python’s design and module architecture has influenced development of various languages. Boo language uses an object model, syntax and indentation, almost like Python. Further, syntax of languages like Apple’s Swift, CoffeeScript, Cobra, and OCaml all share similarity with Python.
5. Operating systems: Python is usually an integral part of Linux distributions. as an example, Ubuntu’s Ubiquity Installer, and Fedora’s and Red Hat Enterprise Linux’s Anaconda Installer are written in Python. Gentoo Linux makes use of Python for Portage, its package management system.

Python is one of the fastest growing programming languages. It has undergone more than 28 years of the successful span. Python itself reveals its success story and a promising future ahead. Python programming language is presently being used by a number of high traffic websites including Google, Yahoo Groups, Yahoo Maps, Shopzilla, Web Therapy, Facebook, NASA, Nokia, IBM, SGI Inc, Quora, Dropbox, Instagram and Youtube. Similarly, Python also discovers a countless use for creating gaming, financial, scientific and instructive applications.

Python is a fast, flexible, and powerful programing language that's freely available and used in many application domains. Python is known for its clear syntax, concise code, fast process, and cross-platform compatibility.

Python is considered to be in the first place in the list of all AI and machine learning development languages due to the simplicity. The syntaxes belonging to python are terribly easy and can be easily learn. Therefore, several AI algorithms will be easily implemented in it. Python takes short development time as compared to different languages like Java, C++ or Ruby. Python supports object oriented, functional as well as procedure oriented styles of programming. There are lots of libraries in python that make our tasks easier.

Some technologies relying on python:

Python has become the core language as far as the success of following technologies is concerned. Let’s dive into the technologies which use python as a core element for research, production and further developments.

1. Networking: Networking is another field in which python has a brighter scope in the future. Python programming language is used to read, write and configure routers and switches and perform other networking automation tasks in a cost-effective and secure manner.
2. Big Data: The future scope of python programming language can also be predicted by the way it has helped big data technology to grow. Python has been successfully contributing in analyzing a large number of data sets across computer clusters through its high-performance toolkits and libraries.
3. Artificial Intelligence (AI): There are plenty of python frameworks, libraries, and tools that are specifically developed to direct Artificial Intelligence to reduce human efforts with increased accuracy and efficiency for various development purposes. It is only the Artificial Intelligence that has made it possible to develop speech recognition system, interpreting data like images, videos etc.

Why Choose Python for Artificial Intelligence and Machine Learning?

Whether a startup or associate MNC, Python provides a large list of benefits to all. The usage of Python is specified it cannot be restricted to only one activity. Its growing popularity has allowed it to enter into some of the most popular and complicated processes like artificial intelligence (AI), Machine Learning (ML), natural language process, data science etc. The question is why Python is gaining such momentum in AI? And therefore the answer lies below:

Flexibility: Flexibility is one of the core advantages of Python. With the option to choose between OOPs approach and scripting, Python is suitable for every purpose. It works as a perfect backend and it also suitable for linking different data structures together.

Platform agnostic: Python provides developer with the flexibility to provide an API from the existing programming language. Python is also platform independent, with just minor changes in the source codes, you can get your project or application up and running on different operating systems.

Support: Python is a completely open source with a great community. There is a host of resources available which can get any developer up to speed in no time. Not to forget, there is a huge community of active coders willing to help programmers in every stage of developing cycle.

Prebuilt Libraries: Python has a lot of libraries for every need of your AI project. Few names include Numpy for scientific computation, Scipy for advanced computing and Pybrain for machine learning.

Less Code: Python provides ease of testing - one of the best among competitors. Python helps in easy writing and execution of codes. Python can implement the same logic with as much as 1/5th code as compared to other OOPs languages.

Applications of Python:

There are so many applications of Python in the real world. But over time we’ve seen that there are three main applications for Python

Web Development: Web frameworks that are based on Python like Django and Flask have recently become very popular for web development.

Data Science (including Machine Learning): Machine Learning with Python has made it possible to recognize images, videos, speech recognition and much more.

Data Analysis/Visualization: Python is also better for data manipulation and repeated tasks. Python helps in the analysis of a large amount of data through its high-performance libraries and tools. One of the most popular Python libraries for the data visualization is Matplotlib.

Now a days, the popularity of scientific computing environments such as IDL, Maple, Mathematica, Matlab and R has increased considerably. Engineer simply feel more productive in such environments. One reason is the simple and clean syntax of command languages in these environments. Another factor is tight integration of simulation and visualization in Maple, R and similar environments you can quickly and conveniently visualize what you just have computed. One problem with the mentioned environments is that they do not work, at least not in an easy way, with other types of numerical software and visualization systems. Many of the environment specific programming languages are also quite simple or primitive. At this point scripting in Python comes in.

Python offers the clean and simple syntax of the popular scientific computing environments, the language is very powerful, and there are lots of tools for simulation, visualization, and data analysis programs. Python allows you to build your own Matlab like scientific computing environment, tailored to your specific needs and based on your favorite high performance FORTRAN, C, or C++ codes.

Scientific Computing Is More Than Number Crunching: Many computational scientists work with their own numerical software development and realize that much of the work is not only writing computationally intensive number-crunching loops. Very often programming is about shuffling data in and out of different tools, converting one data format to another, extracting numerical data from a text, and administering numerical experiments involving a large number of data files and directories. Such tasks are much faster to accomplish in a language like Python than in FORTRAN, C, C++, and C#.

Scripting is particularly attractive for building demos related to teaching or project presentations. Such demos benefit greatly from a GUI, which offers input data specification, calls up a simulation code, and visualizes the results. The simple and intuitive syntax of Python encourages users to modify and extend demos on their own, even if you are newcomers to Python.

Python has some clear advantageous over Matlab and similar environments:

• The Python programming language is more powerful.
• The Python environment is completely open and made for integration with external tools.
• A complete toolbox/module with lots of functions and classes can be contained in a single file.
• Transferring functions as arguments to functions is simpler.
• Nested, heterogeneous data structures are simple to construct and use.
• Object-oriented programming is more convenient.
• Interfacing C, C++, and FORTRAN code is better supported and therefore simpler.
• Scalar functions work with array arguments to a larger extent (without modifications of arithmetic operators).
• The source is free and runs on more platforms.

How to run Python script

One of the most important skills you need to build as a Python developer is to be able to run Python scripts and code. This is going to be the only way for you to know if your code works as you planned. It’s even the only way of knowing if your code works at all!

A Python script is a reusable set of code which is essentially a Python program or a sequence of Python instructions contained in a file. You can run the program by specifying the name of the script file to the interpreter. 

This step-by-step will guide you through a series of ways to run Python scripts, depending on your environment, platform, needs, and skills as a programmer. When you try to run Python scripts, a multi-step process begins. 

1. Run Python Scripts Using the Command-Line: A Python interactive session will allow you to write a lot of lines of code, but once you close the session, you lose everything you’ve written. That’s why the usual way of writing Python programs is by using plain text files. By convention, those files will use the .py extension. Open a command-line and type in the word ‘python’ followed by the path to script file and press enter. You’ll see output on your screen.
2. Run Python Scripts Interactively: It is also possible to run Python scripts and modules from an interactive session. This option offers you a variety of possibilities.
   • Taking advantage of import
   • Use importlib and imp
   • Use runpy.run_module()
   • Hacking exec()
   • Use execfile()
3. Run Python Scripts from an IDE or a Text Editor: IDE offer the possibility of running your scripts from inside the environment itself. It is common for them to include a Run or Build command, which is usually available from the tool bar or from the main menu.
4. Run Python Scripts From a File Manager: Running a script by double-clicking on its icon in a file manager is another possible way to run your Python scripts. This option may not be widely used in the development stage, but it may be used when you release your code for production.

After you play around with Python on your own or in an online tutorial, I highly recommend to you to write small scripts to strengthen your knowledge. To stay motivated, choose a program that is in some way useful to you, so you can gain insight while figuring out Python. Below are a few ways you can begin to build your expert level in Python script:

• Python Documentation
• Google and stackoverflow
• Ask an experience person

First, create a very basic version end-to-end. It is much less frustrating than trying to build a super-duper version from scratch. A big plus is that you will have something you can use very fast. Then iterate and add more complex functionality one by one.

Second, decompose large problems to smaller ones by introducing functions. Small, cohesive functions are easy to understand, test and debug.

Last, but probably the most important thing to keep in mind, is practice makes perfect. Start small, be patient and practice. Happy coding!