Python Step By Step Tutorial

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Python has become one of the most widely used programming languages in the tech industry. Github’s 2020 report ranked Python second among languages most used by programmers who contributed to the site, and Python was the fourth most popular language in Stack Overflow’s 2020 developer survey. Python’s growth has been rapid while other languages, such as Ruby, have declined in popularity.
One reason for this surge in use may be Python’s versatility. As a general-purpose programming language, Python can be used for a variety of technical functions, including data science, software development, back-end web development, and machine learning. Python is especially popular with startups and within the financial tech industry.
Python’s broad popularity and applicability means more opportunities for Python programmers. It also means that Python is a great language to learn if you want to break into the tech industry.
Free online Python courses provide a low-risk way for self-motivated students to get their feet wet. Additionally, compared to many other programming languages, Python is relatively easy to learn. The list below describes 10 places you can learn Python online for free.
Related Programs That Might Interest You
Learn about start dates, transferring credits, availability of financial aid, and more by contacting the universities below.
Top 10 Free Python Courses
Google’s Python Class
Google’s Python class targets people who have some background knowledge in programming, but are new to Python. The class includes video lectures, written lessons, and practice coding exercises. Students start by learning about strings and lists before moving on to more advanced concepts such as connections, processes, and text files.
Microsoft’s Introduction to Python Course
This beginner Python course teaches students how to write basic Python code, including working with console input and output and declaring variables. Students learn to use the Python interpreter to execute scripts and create their own app.
Introduction to Python Programming on Udemy
This short introduction to Python programming teaches students the basics of Python so they can start writing their own functions and scripts. Students explore strings, variables, data types, and more. This course accommodates learners without any previous coding experience. See more coding courses offered Udemy here.
Learn Python 3 From Scratch by Educative
This interactive 10-hour course contains 75 lessons to help you learn to program in Python. Students start by learning the basic building blocks of Python, such as data types and variables, and then move on to topics like loops, functions, and libraries. The course includes coding challenges and quizzes.
Python for Everybody on Coursera
The University of Michigan offers this course, which teaches students to analyze data and code using Python. Students learn to write programs that compile, analyze, and visualize data. This course is appropriate for learners without prior experience, and it should take about eight months to complete if students dedicate about three hours of work per week to the course.
Python for Data Science and AI on Coursera
IBM offers this beginner-friendly Python course that focuses on data science and artificial intelligence. The course makes up part of the requirements for the IBM Full-Stack Cloud Developer Professional Certificate and the IBM Data Analyst Professional Certificate on Coursera.
Learn Python 2 on Codecademy
Students in this course learn foundational Python programming concepts, including syntax, strings, functions, lists, and dictionaries. The course also covers advanced topics like lambda expressions, list slicing, list comprehensions, and data structures. See more coding courses offered Codecademy here.
Learn Python 3. 6 for Total Beginners on Udemy
This course serves beginners who are completely new to programming. Students learn about dictionaries, tuples, and lists, as well as how to handle errors. The course includes seven coding exercises along with their solutions.
Try Django 1. 11 // Python Web Development on Udemy
This course teaches students to use Django 1. 11 — the leading web development framework for Python. Students also learn Python 3. The course covers basic database integration, URL routing, querying and saving data in a database, and other topics.
Learn Python – Full Course for Beginners by freeCodeCamp
This four-hour video teaches students core Python concepts such as variables, strings, tuples, functions, if statements, and dictionaries. Learners are encouraged to follow along by coding as they watch the more coding courses offered freeCodeCamp here.
Are Bootcamps a Good Alternative to Traditional College?
Our 2021 Bootcamps Trends Report found that “Almost half (48%) of all business leaders surveyed, and 56% of those from tech companies and organizations that hire for tech roles, said that bootcamps will play a pivotal role in meeting future workforce training needs”.
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Frequently Asked Questions About Free Python Courses
Where can I learn Python for free?
This list of 10 free Python courses is a great place to start looking for free Python instruction. You might also want to check the Meetup website to see if there are any coding groups in your area that offer in-person workshops, which may help you learn Python for free.
Can I teach myself Python?
If you are self-motivated and able to keep yourself on task, you should be able to learn Python online for free. There are many free online Python courses and other resources to choose from, most of which rely on a self-paced format that lets you learn at your own speed.
Should I learn Java or Python?
Java and Python are both popular with employers. If you dream of getting a job at a specific company, try to find out what languages that company uses in their work. Also think about your ideal role. Java, for instance, is the better language to learn if you want to develop Android apps. Many consider Python to be a slightly easier language to learn than Java, so that may also factor into your decision.
Additional Resources
Python Bootcamps
The Ultimate Guide to Coding Bootcamps
Are Coding Bootcamps Worth It?
Learn Python: Tutorials for Beginners, Intermediate, and Advanced - Stackify

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As you know, computers totally depend on program code to function properly. There are so many programming languages available that helps developers create applications. Python is one of the high-level, interpreted and general-purpose programming languages that is easy to use, comprehensive and powerful. In 1991, Guido van Rossum (referred to its father) developed the Python programming language.
Python is a widely used dynamic programming language compared to other languages such as Java, Perl, PHP, and Ruby. It is often termed as a scripting language. It provides support for automatic memory management, multiple programming paradigms, and implements the basic concepts of object-oriented programming (OOP).
Python is a strongly-typed procedural language along with support for a huge and broad standard library. The library of Python provides support for many Internet protocols such as FTP, and IMAP. It has a unique syntax, which makes it different from other programming languages like Java, C++, and C. Some other amazing features of Python are as follows:
Open source language
Simple and easy to learn the language
Scalable and portable language
High-level language
People often think that the name of the programming language is inspired by Python, the snake, which is not true. It is actually derived from the name of a popular television series named Monty Python’s Flying
Python has some great applications. It is widely used in the development of frameworks such as Django and Pyramid, and advanced content management systems like Plone and Django CMS.
Top 30 Python Tutorials
In this article, we will introduce you to some of the best Python tutorials. These tutorials are suited for both beginners and advanced programmers. With the help of these tutorials, you can learn and polish your coding skills in Python.
Udemy
Learn Python the Hard Way
Codecademy
Invent with Python
Pythonspot
Coursera
Tutorials Point
Codementor
Google’s Python Class eBook
Dive Into Python 3
NewCircle Python Fundamentals Training
Studytonight
Python Tutor
Crash into Python
Real Python
Full Stack Python
Python for Beginners
Python Course
The Hitchhiker’s Guide to Python!
Python Guru
Python for You and Me
PythonLearn
Learning to Python
Interactive Python
IntelliPaat
Sololearn
W3Schools
1. Udemy
If you want to explore and learn coding skills in Python, then Udemy provides you the best platform to learn the Python language. It offers Python courses from beginner to expert level. You can learn both versions, Python 2 and Python 3, with Udemy. It also teaches you about the advanced features of Python, including a collection module, decorators, and timestamps.
After learning the concept, you can test your skills with coding exercises. Later, you will also learn how to create games in Python such as Tic Tac Toe and Blackjack. In order to get started, you are required to create an account on the After completing the entire course, you will get a certificate of completion.
Some of the key concepts included in this tutorial are as follows:
Introduction of Python
Python objects and Data structure basics
Python statements
2. Learn Python the Hard Way
“Learn Python the Hard Way” is the most popular way to get started with the Python programming language. You are not required to have prior experience in coding. This tutorial will teach you from level 0 to higher levels. It is an open source and free tutorial, available online for a refresher as well as professional programmers.
It provides opportunities to test and implement what you have learned. For example, it will provide a piece of code and you have to guess/write the output of that code. Here, you can learn about some other languages such as Ruby, C, SQL, and JavaScript.
Some of the key topics included in this tutorial are as follows:
Variables and names
Strings and text
Reading and writing files
Classes and objects
Functions
File handling
3. Codecademy
Codecademy is an emerging online learning platform, which emphasizes improving the overall learning experience. It offers free courses on the Python programming language. It also provides a free code editor so that users can practice writing code, and a forum to discuss queries with friends and other members.
In order to get started with a Python tutorial, you are required to create an account on Here, you can also learn about some other programming languages such as Java, Android, and C++.
Conditionals and control flow
List and dictionaries
Loops
4.
contains the official documentation of Python programming language. It helps both beginners and experienced programmers to learn about Python. It is one of the free online Python tutorials.
Under, you will get a lot of references and materials to work with the language. It will teach you right from the basic concepts. Later, you can also learn about some advanced topics as well such as Python libraries.
Mutable and Immutable objects
PEP (Python enhanced proposals)
Generators and Iterators
5. Invent with Python
Invent with Python is a free online tutorial that helps in learning the Python programming language. If you are a beginner, then this tutorial website is the best platform for you to start.
At the end of each chapter or lesson or concept, it offers you an exercise to test your skills. You can also create games in Python with the help of the book, “Invent Your Own Computer Games with Python”.
Functional programming with Python
Object-oriented programming with Python
Getter and setter in Python
6. Pythonspot
If you are looking for Python-centric tutorials and resources, then Pythonspot is the best place for you. It offers free tutorial and good quality content related to the Python programming language for both beginners and professional developers.
It has organized the course content according to the difficulty level. For example, initially you will learn about beginner-level concepts and it then moves to advanced topics.
Regular expressions
FTP client in Python
Python web development
7.
The website is completely dedicated to providing tutorials and reference materials to programmers as well as developers. Here, you can easily learn the Python language and its related concepts.
It incorporates a code simulator that helps users to write and deploy code from their web browsers.
Executing Python scripts
If statements
List
Exception
8. Coursera
Like other tutorial websites, Coursera also provides free online courses for several programming languages. You can easily learn the Python programming language using this platform. Like other online resources, it also offers digital classes in order to learn the Python programming language. It offers videos tutorials in different languages like English, Spanish, Russian, Chinese, and French.
You can also opt to view subtitles of videos if required. These subtitles can be viewed in multiple languages. For example, Korean, Chinese, Spanish, German, Turkish, Vietnamese, and many others.
Introduction to basics
Advanced concepts
Functions and control statements
9. Tutorials Point
Tutorials Point is among the best online tutorials, which provides free and good quality content in order to learn the Python programming language. It is best suited for beginners as they can test themselves with multiple exercises (or practical problems) and various coding options. They can learn and become experts in coding using this platform. However, it also provides an opportunity for professionals to polish and nourish their coding skills.
Apart from basic Python concepts, it also covers multiple topics of advanced Python such as database access, CGI, game programming, implementing multithreading, XML processing, networking, and many more.
Basic syntax
Variable types
Basic operators
Decision making
10. Codementor
The tutorial website is designed for both intermediate and experienced programmers. It has a unique and easy navigation pane so that anyone can access it very easily. It offers good quality content about Python and other programming languages that is created by experienced professional or developers.
You will find multiple articles posted by developers about different topics from beginner to expert level. Here, you can learn how to use Python for web development, data science, and machine learning as well.
Sorting Git authors in an app with code
Integrating with Python
Using Python decorators
11. Google’s Python Class eBook
Most of the students often get confused while choosing a suitable online platform to learn languages such as Java, Ruby, C++, Python and many others. Google’s Python class eBook provides free classes to learn the Python programming language.
It focuses more on theoretical concepts rather than practical applications. It has sorted all the concepts in an organized manner that helps in learning and understanding basic concepts. Apart from written content, it also provides lecture videos and a set of practical problems, which further tests your abilities after completion of topics.
If you want to explore more about Python, then you can choose any of our multiple books that are available on the official website i. e. Some of the key topics included in this tutorial are as follows:
Strings
Lists
Sorting
Dicts and files
12. Dive Into Python 3
The Dive in Python 3 book primarily focuses on the difference between Python 2 and Python 3. If you want to learn about the Python language, then this site is best for you.
It is among the best online resources to explore more about the Python language. As it is covered under Creative Commons Licence, you can download the PDF and HTML versions of this book at zero cost.
Each tutorial lesson consists of specific points and key topics. This tutorial will assist you to cover the distance from beginner to a professional.
Comprehensions
Classes and iterators
Unit testing
Serializing objects
Special method names
13. NewCircle Python Fundamentals Training
Like other programming tutorials, NewCircle is another online platform to learn the Python programming language for both beginner and professional programmers. In this tutorial, you will come across several video lectures that helps in better understanding of concepts. In addition to this, you will also get several videos about practical exercises and examples. You will also get a Python Fundamental training series, which is very useful for a beginner.
Types and variables
Simple expressions
Containers
Exceptions
14. Studytonight
If you are looking for a platform, which can help you with the Python programming language from the basics, then you can choose StudyTonight. It offers free online Python programming course. This tutorial provides you free course content along with the examples. Hence, it is widely popular among other free online tutorials.
It also offers a lot of practical problems or exercises to the users so that they can easily implement what they have learned. It also contains Q&A forum, where you can ask and discuss several questions as well as queries with other users.
It has divided the overall course content into three categories i. basic, intermediate, and advanced. Apart from Python, you can also learn about other languages such as C, C++, DBMS, SQL, JSP, CSS and many others.
Modules and functions
Data types
Conditional statements
15. Python Tutor
Python Tutor is a free online learning website, which offers tutorial classes to learn the basics of programming. Python Tutor, developed by Philip Guo, provides video classes along with the content so that the users can easily understand the topic or concept.
Apart from Python, it also provides free courses for other languages as well such as Java, C, C++, JavaScript, and Ruby.
Introduction
Basics of programming
Python classes, objects, and functions
16. Crash into Python
Crash into Python is a comprehensive guide to learn the Python Programming Language. It is a free online tutorial platform that teaches about programming in the Python language. In order to get started with tutorials, you should have prior knowledge of functions, classes, and other basic concepts. Hence, it is suitable for experienced or professional developers (also referred to as programmers).
It also incorporates several presentation slides and documents, which helps in understanding the concept.
Code organization
Programming features
Object-oriented features
17. Real Python
Real Python is among the best online tutorials, which provides courses for different languages. Here, you can learn Python very easily with the help of the data provided along with the examples.
It also provides premium courses to its users, starting from $60. With the help of premium courses, you can get access to content having more than 1300 pages, video classes, practice exercises, and multiple course assignments.
Lists and tuples
Reading and writing CSV files
String and character data
Operators and expressions
18. Full Stack Python
Full Stack Python is another free online platform to learn the Python programming language. It is best suited for those who have prior basic knowledge of programming. It helps you become proficient in Python. Here, you can learn how to create web applications in Python, and develop other Python-based applications. Moreover, you will also learn how to deploy an application.
Python programming language
Development environments
Web and web app development
Security of the web applications
19. Python for Beginners
If you are looking for a good place to learn the Python language online and free, then Python for Beginners is an appropriate platform for you. Users can find all the topics starting from the beginner level to expert level.
Functions with parameters
Logical operators
Conditional loops
20. Python Course
The website,, developed by Bernd Klein, is a useful resource containing free online tutorials that help in learning the Python language. The course begins with the most basic concepts and then moves toward advanced topics. Like other tutorial sites, it also presents the concepts along with the examples and explanatory diagrams. In this tutorial, you can learn about both Python 2 and Python 3.
How to use the interactive interpreter
How to execute a script
Structuring with indentation
21. The Hitchhiker’s Guide to Python!
The Hitchhiker’s Guide to Python! is a comprehensive guide that provides tutorial classes to both novice and experienced programmers. You can also download the PDF version of this guide to learn Python. Alternatively, click here to learn Python online and free. This link takes you to the online tutorial version of this guide.
Setting up environment
Python development frameworks
Writing great code
Guide to create applications
22. Python Guru
The Python Guru is an excellent platform for beginners to learn about programming languages like Python. It has divided the course content into two categories i. e., beginning Python and advanced Python.
After completing the beginner concepts, you can move to advanced Python concepts.
Getting started
Installing Python 3
Running programs
Datatype and variables
23. Python for You and Me
This is a free online book that provides good quality content about Python programming language. You can learn Python very easily with the help of this online book. It has content related to both Python 2 as well as Python3.
It starts with some of the basic concepts and then moves toward advanced concepts. You can check the complete content before starting learning and practice the topics.
Installation
Beginning
Variables and datatypes
24. PythonLearn
One of the most popular resources, PythonLearn, offers complete course content to learn the Python programming language. It generally focuses on Python 3, and provides references as well as materials to understand the concepts of Python 3.
It provides you the access to different exercises, audio, and video lectures so that you can learn Python easily. You can also download the provided audio as well as video lectures.
Installing
Writing code
25. Learning to Python
Like other online tutorial resources, Learning to Python is another free online tutorial through which you can learn Python language. It is developed by Alan Gauld, specially designed keeping beginners in mind. It has categorized the entire content into three categories i. basic, advanced and applications.
GUI programming
26. Interactive Python
The Runestone Interactive Python is an emerging online platform to learn the Python programming language. It contains a lot of open-source, and online textbooks that help both novices and experienced programmers.
In order to get started, you are required to create an account on Interactive Python. Then, you will get access to all the available reference books.
Objects and classes
27.
If you want to explore the depth of Python programming language, then is the best place to do so. It is among the best resources on the internet.
This tutorial is well suited for those who have some prior coding experience in Python. You can learn all the advanced concepts in a challenging way.
Advanced uses of decorators
Exercises
28. IntelliPaat
IntelliPaat is an open-source and free online tutorial website. It offers a tutorial to learn the Python language, especially for beginners.
Conditional control flow
Modules
Exception handling
29. Sololearn
Sololearn offers a complete tutorial about Python 3. It helps novice as well as skilled programmers to learn and explore more about the Python programming language. It contains a total 92 chapters of Python 3 and 275 related quizzes.
Now you can learn Python with the help of your mobile phone also. Sololearn has launched its mobile application that can be downloaded from Google Play Store and Apple Store. It also offers courses about other languages such as HTML, JavaScript, C++, and Java.
What is Python
Your first program
Type conversions
30. W3Schools
W3Schools contains well-organized, simple, and easy to understand tutorials about the Python programming language. The entire course content is embedded with lots of examples. W3Schools is one of the widely used free online learning platforms. It offers tutorial courses about other programming languages as well such as HTML, CSS, Java and many others.
Casting
Operators
Sets
In order to start development with Python, you will need a platform or framework to code. While choosing a framework, remember to consider the size and complexity of your application or project. Read this article to find the commonly used Python frameworks.
Stackify’s Application Performance Management tool, Retrace keeps Python applications running smoothly with APM, server health metrics, and error log integration. Download your free two week trial today!
You can also try Stackify’s free code profiler, Prefix, to write better code on your workstation. Prefix works with, Java, PHP,, Ruby, and Python.
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Python Tutorial – Learn Python Programming Step by Step

Python Tutorial – Learn Python Programming Step by Step

This Python tutorial is a one-stop programming guide for all beginners. It can help you learn Python starting from elementary to advanced levels in simple and easy steps.
Python is very intuitive and easy to learn. It is also one of the most preferred programming languages for working in Data Analytics and Machine Learning domains.
TIOBE index also ranked it as the third most popular programming language of 2019. And its usage has increased by 2% from the last year. Hence, you took the right decision to learn Python.
If you are a beginner to Python programming, then we highly recommend you to learn with the flow of this tutorial. However, you may directly jump on to the Python tutorial section [Go].
History of Python
Silent Features of Python
Python Programming Domains
Why Should You Learn Python?
How to Install and Run Python?
Mac OS X
Linux OS
Windows OS
Create Your First Python Program
Learn Python: Step by Step Tutorials
Python Programs for Practice
Python Tutorial for Beginners
Python is easy to learn, highly readable, and simple to use. It has a clean and english-like syntax which requires less coding and let the programmer focus on the business logic rather than thinking about the nitty-gritty of the language.
We’ve organized this course to provide depth, detail, and degree. Even a beginner can refer to it and learn Python with least efforts, without investing a lot of time. This tutorial would make you apt and apply this knowledge to your live projects.
The below sections cover Python history, features, domains, why to learn Python, how to install and run Python on platforms like Windows, Linux, and Mac OS X.
Back to top
It was a Dutch programmer, Guido Van Rossum, who wrote Python as a hobby programming project back in the late 1980s. Since then, it has grown to become one of the most polished languages of the computing world.
What Led Guido to Create Python?
In his own words, Guido revealed the secret behind the inception of Python. He started working on it as a weekend project utilizing his free time during Christmas in Dec’1989. He originally wanted to create an interpreter, a descendant of the ABC programming language of which he was a contributing developer. And we all know that it was none other than Python, which gradually transformed into a full-fledged programming language.
How the Name Python Came About?
Guido initially thought the Unix/C hackers to be the target users of his project. And more importantly, he was fond of watching the famous comedy series [The Monty Python’s Flying Circus]. Thus, the name Python struck his mind as not only has it appealed to his taste but also his target users.
List of Known Python Releases
Python VersionDate of Release
Python v0. 1. 0 (The First Edition)1990
Python v0. 9. 5 (Macintosh support)2nd Jan’1992
Python v1. 0. 026th Jan’1994
Python v1. 5. 03rd Jan’1998
Python v1. 6. 0 (Latest updated version)5th Sep’2000
Python v2. 0 (Added list comprehensions)16th Oct’2000
Python v2. 7. 0 (Latest updated version)3rd Jul’2010
Python v3. 03rd Dec’2008
Python v3. 0 (Latest updated version)Jun’2018 and you wish to go to the Python tutorial section, then click here.
☛ Code Quality
Python code is highly readable, which makes it more reusable and maintainable. It has broad support for advanced software engineering paradigms such as object-oriented (OO) and functional programming.
☛ Developer ProductivityPython has a clean and elegant coding style. It uses an english-like syntax and is dynamically-typed. So, you never declare a variable. A simple assignment binds a name to an object of any type. Python code is significantly smaller than the equivalent C++/Java code. It implies there is less to type, limited to debug, and fewer to maintain. Unlike compiled languages, Python programs don’t need compiling and linking, which further boosts the developer’s productivity.
☛ Code Portability
Since Python is an interpreted language, so the interpreter has to manage the task of portability. Also, Python’s interpreter is smart enough to execute your program on different platforms to produce the same output. So, you never need to change a line in your code.
☛ Built-in and External Libraries
Python packages a large no. of the prebuilt and portable set of libraries. You can load them as and when needed to use the desired functionality.
Python Libraries for Data Science and Machine Learning
☛ Component Integration
Some applications require interaction across different components to support the end to end workflows. Onc such component could be a Python script while others be a program written in languages like Java/C++ or any other has several ways to support the cross-application communication. It allows mechanisms like loading of C and C++ libraries or vice-versa, integration with Java and DotNET components, communication using COM/Silverlight, and interfacing with USB devices over serial ports. It can even exchange data over networks using protocols like SOAP, XML-RPC, and CORBA.
☛ Free to Use, Modify and Redistribute
Python is an OSS. You are free to use it, make amends in the source code, and redistribute, even for commercial interests. It is because of such openness that Python has garnered a vast community base that is continually growing and adding value.
☛ Object-oriented from the Core
Python primarily follows the object-oriented programming (OOP) design. OOP provides an intuitive way of structuring your code, and a solid understanding of the concepts behind it can let you make the most out of your coding. With OOP, it is easy to visualize the complex problem into smaller flows by defining objects and how they correlate. And then, we can form the actual logic to make the program work.
If you wish to go to the Python tutorial section, then click here.
☛ Web Application Development
Python has the lion’s share in the field of web development. Many employers look for full-stack programmers who know Python. And you can become one of them by learning frameworks (WAF) like Django, Flask, CherryPy, and Bottle, which give extensive support for web development. All of these are developed using Python. These frameworks deliver essential features to simplify tasks related to content management, accessing a backend database, and handling network protocols like HTTP, SMTP, XML-RPC, FTP, and POP. Some of the known online products created in Python are Plone (Content Management System), Zope application server, Quixote web framework, and ERP5, an open-source enterprise solution used in the aerospace field.
☛ Data Science and Machine Learning
Data science, analytics, and machine learning are evolving at a prolific rate. Many companies are now seeking machine learning engineers who can filter through the stacks of data and support them in making the right business decisions. And Python has now become the first language for everyone entering into the ML domain. It provides all kinds of tools and models to programmers for tasks like web scraping, data collection, cleaning, and algorithms. So, if you are apt in Python programming, then it is the right time to enter into this domain.
How to Become a Machine Learning Engineer
☛ Scientific and Numeric Computing
Python has become the obvious choice for working in Scientific and Numeric Applications. And there are multiple reasons for this advancement. First and foremost is that Python is a free and open-source language. It even allows you to modify its source code and redistribute.
Next, it is getting the support of a growing number of specialized modules like NumPy, SciPy, Pandas, matplotlib, and IPython. All of these are available for free and provide a reasonable alternative to paid products like Matlab. Hence, it is one of the reasons for it to become more dominant in the field of Scientific and Numeric.
Hence, Python is becoming a leader in this field. The focus of Python language is to bring more productivity and increase readability.
☛ GUI Programming
Python has some inherent qualities like clean and straightforward coding syntax as well as dynamic typing support. These work as the catalyst while developing complex GUI and image processing applications.
Python’s clean syntax and tremendous support of many GUI libraries (like wxWidgets, pyqt, or pyside) made Programmers deliver graphics software like Inkscape, Scribus, Paint Shop Pro, and GIMP.
In addition to the 2D imaging solutions given above, Python is even propelling many 3D animation software like 3ds Max, Blender, Cinema 4D, Houdini, and Maya. These applications integrate with Python for automation to speed up their workflows and eliminate the need for doing them manually.
☛ Software Prototyping
Python has many qualities that make it a natural choice for prototyping. The first is being an open-source programming language, a massive no. of users follow and contribute to its development. Further, the lightness, versatility, scalability, and flexibility of refactoring code in Python speed up the development process from the initial prototype.
Hence, Python gives you an easy-to-use interface to create prototypes. For example, with Pygame (a multimedia library), you can prototype a game in different forms, test, and tailor it to match your requirements. Finally, you can take clues from the selected prototype and develop it using languages like C++/Java.
☛ Professional Training
Python is indeed the right programming language for teaching and training purposes. It can be a stepping stone for beginners to enter into vocational training. They can even cover overlapping areas like Data Analytics and Machine Learning.
Hence, there is a massive demand for professional trainers who can teach both basic and advanced level Python programming. You can impart training offline in a classroom or use tools like Skype or hangout to do it online.
Why Should You Learn Python Programming?
Writing Python code is so much fun that you won’t feel it like a routine programming task. Here are a bunch of compelling reasons for you to learn Python and read this Python tutorial.
☛ Nonrestrictive Programming Syntax
Python is the language that even a non-programmer can understand. It is a highly readable, problem-oriented language that lets you focus on writing the logic instead of getting into the syntax nitty-gritty.
Here is a sample program for implementing an Interest Calculator. By looking at it, you can feel how easy it is to write and understand the code in Python.
print(‘Interest Calculator:’)
amount = float(input(‘Principal amount? ‘))
roi = float(input(‘Rate of Interest? ‘))
yrs = int(input(‘Duration (no. of years)? ‘))
total = (amount * pow(1 + (roi/100), yrs))
interest = total – amount
print(‘\nInterest =%0. 2f’%interest)
☛ No Explicit Declaration
In Python, don’t use type specifiers for declaring variables. You can do so without mentioning any data types in Python. Also, there is no need to use any separator like a semicolon to mark the end of a statement.
In Python, indentation replaces brackets to group a block of instructions. And you can use either tabs or spaces to indent the code.
However, Python enforces some rules (PEP 8), such as to use four spaces per indentation level. So, there are many such facets in Python which make learning simpler for beginners.
☛ State of the Art OOP Support
Object-Oriented Programming (OOP) comes built into the Python language. It lays down a model that derives a solution by creating objects, defining relationships, and binding data. However, the procedural programming methodology takes on a top-down approach and solves one problem at a time while splitting it into smaller ones. On the other hand, OOP is a bottom-up problem-solving technique that seeks a blueprint of the solution at the onset and leaves implementation for the later.
Using classes, building inheritance, and constructing objects are keys to developing yourself as a professional programmer. And you can quickly master these concepts in Python and produce better quality projects, quicker than in other languages.
Python lets you minimize the size of code you write and accomplishes more.
☛ Powerful Debugging
If you have a product in dev and QA logged a defect, then debugging is what you should be doing. However, if a customer has reported an issue, then debugging gets far more critical. Here also, Python leads the way by providing tools like pdb, pudb, and PyDebug that makes debugging experience more comfortable.
For example, the pudb tool can quickly guide programmers to dig through the code and nail down the problem.
It is a fact that most languages are working to improve their debugging tools. But with Python, they are only getting better.
How to Get Python Running on Your System?
Python programming is platform-independent. It means that you write the code once, and it should run on all supported platforms. Here, you can find the steps to install Python on three major platforms: Mac OS X, Linux, and Windows. If you already have Python installed, then you can proceed to the next section of this Python tutorial.
Install Python on Mac OS X
☛ The latest version of Mac OS X is 10. 13 (High Sierra), which has Python 2. 7 pre-installed. Beginners can start to use Python 2 and learn to program. However, professional programmers should upgrade to Python 3. 6.
☛ For installing Python on Mac, go to the Download Python for Mac OS X page, select the desired package, and click to download. Next, launch the downloaded package, follow the steps, and finish the installation.
☛ If you are a command-line geek and love to use a console for routine system tasks, then run the following commands to install Python.
Firstly, open the terminal and install the HomeBrew package manager for Mac OS X.
$ ruby -e “$(curl -fsSL)”
Enter the below command to check the Brew installation status.
$ brew –version
Now, use the Brew package manager to install Python 3. x.
$ brew install python3
☛ Installing Python with Brew also installs the PIP tool (pip3). It is a quick update manager to check out the available modules in the Python repository.
Run Python on Mac OS X
☛ Since now you have Python installed, it’s time to start coding. But you would need an IDE for professional development. It would turn you more efficient and productive. We recommend the community version of PyCharm and Eclipse with PyDev. Both of these are free and full of features. However, you can read our reviews of the world’s best Python IDEs and choose one for yourself.
☛ However, you can also begin with IDLE, the default IDE that comes with Python. Or even use the Python console to run your first few lines of code. In Python, you can do a lot with a single line of code. For example, you can write a function which checks for odd no, call it with input and print the outcome, but all of that in one single line. Please see the code below.
print((lambda isOdd: isOdd(3))(lambda x: x% 2! = 0))
If you type the above line on a Python CLI, then it would just take an enter key to execute. However, if you are using IDLE to write this code in a script, then press F5 to run it. In either way, this simple one line of code would print “True” in its output.
Install Python on Linux (Ubuntu)
☛ Ubuntu 16. 04 has both Python 2 and Python 3 installed by default. However, you can double-check if they are up to date or not using the apt-get commands.
$ sudo apt-get update
$ sudo apt-get -y upgrade
☛ Once the above process completes, verify the Python version with the following command.
$ python3 -V
# Output.
Python 3. 1
☛ To manage available modules and libraries for Python, let’s install PIP.
$ sudo apt-get install -y python3-pip
☛ The PIP tool downloads new and updates existing packages you may like to use during the development. Here is the command to install the Python packages.
$ pip3 install # For example.
$ pip3 install numpy
☛ Now is the time to check out a few more libs and dev tools that could be pretty useful later. Run the below command to add them to your Python installation.
$ sudo apt-get install build-essential libssl-dev libffi-dev python-dev
☛ You can also set up an isolated space on your system for Python projects. For this, install the venv module. It is a component of the standard Python 3 library.
$ sudo apt-get install -y python3-venv
Run Python on Ubuntu
☛ You now first need to create environments to run Python. Go ahead and execute the following commands.
$ mkdir environments
$ cd environments
$ python3 -m venv test_env
☛ Before you can use the , you have to activate it first. The following command will do the activation for you.
$ source test_env/bin/activate
Your prompt will now a little different than the standard one.
(test_env) [email protected]:~/environments$
This prefix indicates that the environment test_env is currently active. And you can create programs to use the environment’s settings and packages.
☛ We have our virtual env set up, let’s write a simple “Hello, World! ” script. To do this, open up a command-line text editor such as vi and create a new file.
(test_env) [email protected]:~/environments$ vi
The vi editor will open the text file in the terminal. Write the code given below. Press “:wq” to save and exit from the editor.
print(“Hello, World! “)
☛ Once you exit out of vi and return to the shell, let’s run the script.
(test_env) [email protected]:~/environments$ python3
# Output
Hello, World!
To log out of the environment, type the command “deactivate, ” and it’ll return to your original directory.
Install Python on Windows
☛ For installing Python on Windows, go to the Download Python for Windows page, select the desired package, and click to download. We recommend Python 2. 7 as it is one of the most stable packages. Next, launch the downloaded package, follow the steps, and finish the installation.
☛ During installation, select the option “Install for all users” and use the destination directory (C:\Python27) as default.
☛ Next, open the “Start” menu and type “cmd” into the search box. Right-click on the “” link and choose to run as an administrator.
☛ Change directory to “C:\Python27” and run the following command to set Python on the system’s path.
setx PATH “%cd%;%path%;”
pause
The above command (setx) will set the Python path for all future instances of the, but not for the current one. So, you’ll need to reopen the command window to use Python.
Run Python on Windows
☛ Now, you are ready to write your first Python program on Windows. As we stated above, you must use a professional IDE for better development. However, here, we’ll tell you to use IDLE that comes as the default editor for Python.
☛ From the “Start” menu, open “All Programs” and select “Python 2. 7”. Click on the “IDLE (Python GUI)” link to launch the editor.
☛ Once the IDLE window appears, press CTRL+N to create a new file. Then, name it “” while saving using the CTRL+S.
☛ Place the following code in “”
Save the file and go to [Run >> Run Module] or press F5 to execute your first Python script.
Create Your First Program in Python
Usually, it is the “Hello, World! ” program which every language recommends as a starting point to learn Programming. It is a simple program that prints the “Hello, World! ” message on the standard output.
It obviously would be very trivial if we write it in Python, just one statement as the print(“Hello, World! ”). Hence, we’ll use the Interest Calculator program for illustration.
Program Description
This program computes the interest accrued over the specified no. of years on the principal amount with one year as a fixed value for the compound interval.
Program Source Code
years = int(input(‘Duration (no. of years)? ‘))
total = (amount * pow(1 + (roi/100), years))
Let’s Dissect the Program Step by Step
Step-1:
In the first line, we are calling the print() function to display an informational message. It’s the same as printing like the “Hello, World! ”.
Step-2:
In the next three lines, we are using the following variables to store the input provided by the user.
The variable ‘amount’ represents the principal amount borrowed.
Another one is the ‘roi, ’ which represents the rate of interest levied on the principal amount.
The next identifier is ‘years, ’ which is the no. of years representing the borrowing period.
Also, you must note here that we are using Python’s input() function to prompt the user to enter the values. Furthermore, you can observe that we’ve used Python’s conversion operators (int() and float()) in this code.
int(value) -> It converts any value to a plain integer.
float(value) -> It converts a value to a float type number.
So far, we’ve covered the first four lines. Let’s continue exploring the remainder of the program.
Step-3:
In the fifth line of code, we are using a variable called “total” to store the result of a complicated assignment.
The total -> It represents the total amount to be paid after the borrowing period.
But this line is a little different from the previous ones. It is because the first line was an output statement, and the next three were the simple assignment operations. Here, in the fifth line of code, we are computing the total amount, including the Interest part, with the help of the following formula.
Python Tutorial – Compound Interest Formula
Further to add, this assignment involves the use of the following Python’s arithmetic operators and functions.
+ Addition -> It adds numbers on either side of the operator.
* Multiplication -> It multiplies numbers on either side of the operator.
/ Division -> It divides left-hand operand by right-hand operand.
pow(X, Y, Z) -> It determines [X to the power Y]. If Z is available, then it’ll return X to the power Y, modulo Z.
Step-4:
In the sixth line, we are using Python’s subtraction operator (-) to calculate the interest amount.
Step-5:
Finally, there is a print statement displaying the interest amount. Since it is a float value, so the print() function will show the full number by default. Hence, we are using the floating-point format specifier “%0. 2f” in print() function so that we can limit the printing up to two decimal points.
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How can I teach myself Python?

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What are the steps to learn Python?

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What is the best way to learn Python?

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