Python Tutorial: Setting Up, Tools, Features, Applications, Benefits, Comparison

Python, the object-oriented programming language, was created by Guido van Rossum in 1989 and released in 1991. Widely used for server-side web development, software development, mathematics, and system scripting, Python is quite easy to pick up if you are experienced in any programming language.

Python is extensible to C or C++ with interfaces to several OS system libraries and calls. This programming language finds application in several fields of computer science like natural language generation, artificial intelligence, and neural networks. In this tutorial, we will walk you through some basics of Python.

Tutorial Overview 

• A brief guide to setting up Python
• A basic example of a Python program
• Basic tools in Python
• Features unique to Python
• How is Python syntax different from other programming languages?
• Some real-world applications of Python
• The benefits of learning Python
• Downsides of Python as a programming language

Python Programming Language: What Is It?

In 1989, Guido Rossum developed the object-oriented programming language Python. It is perfectly suited for the quick prototyping of sophisticated applications. It is extendable to C or C++ and offers interfaces to numerous OS system calls and libraries. Numerous huge corporations, such as NASA, Google, YouTube, BitTorrent, etc., use the Python programming language. 

Learn Python From Scratch: Why?

Today, computer science and big data rely heavily on the Python programming language. Since Python now ranks among the most highly sought-after programming language in the corporate world, people can learn Python from scratch to explore a tonne of career opportunities available today. 

Learning Python Tutorial For Beginners: Prerequisites

For complete beginners looking to learn Python online, check out this Python lesson. Nevertheless, learning Python online would be much easier if you have a fundamental understanding of any coding language basics, such as loops, functions, etc. 

Setting up Python 

Python distribution is available for UNIX, Linux, Windows, and Macintosh; install Python by downloading the binary code suitable for your platform. Programs and other executables are available in directories, and the respective operating systems provide a search path listing the directories.

An environment variable stores the path. The Python directory must be added to your path for invoking the Python interpreter from any directory. There are three ways to start Python – Script from the Command-line, Interactive Interpreter, and Integrated Development Environment. An example of the first method is shown below:

Example of a basic Python program 

In this section, we will give an example of a Script Mode Programming. Python files have the extension .py.

1. In a test.py file, type the following source code:

2. Then, run the program as follows:

3. The output will be:

Basic Tools in Python 

• Variables – Variables are reserved memory locations for storing values.
• Basic operators – Python supports Arithmetic Operators, Comparison Operators, Assignment Operators, Logical Operators, Bitwise Operators, Membership Operators and Identity Operators.
• Decision making – Python provides different types of decision-making statements, assuming non-zero/non-null values as TRUE and zero/null values as FALSE.
• Loops – Python provides while, for and nested loops to handle loop executions.
• Numbers – Python supports signed integers, long integers, floating-point real values and complex numbers.
• Strings – Python treats both single and double quotes as strings.
• List – It is written as a sequence of comma-separated values within square brackets.
• Tuples – It is similar to lists but immutable and written within parentheses.
• Functions – Python offers in-built as well as user-defined functions.

Python Version: Which One To Download & Learn?

Have you tried downloading and installing Python? If so, chances are you’ve stumbled upon either the Python 2.7 version or version 3.7. This often leads to confusion among beginners: whether to download Python 2 or 3, right? 

The best way to learn Python was the subject of some discussion in the past in the programming community. It’s now more or less obvious that Python 3 is the winner because of how things have changed. We will investigate why, but let’s first take a brief look at the background of these versions. 

Python Libraries and Frameworks: Which One To Choose?

Numerous tools to aid us in programming are included in the Python libraries. Facing challenging situations is a part of the process. However, there’s a high probability that someone already faces such a programming issue and has written Python code to fix it. 

Most likely, that code awaits for you to execute it in some library. There are innumerable other Python libraries, but we’re just going to mention the ones we think you’ll likely need here. 

Features of Python 

• It can be used as a scripting language, to create web applications on a server or for building large applications by compiling to bytecode.
• It supports structured, functional, and OOP programming methods.
• Used alongside software, Python can help create workflows.
• Python provides and supports high-level dynamic data types as well as dynamic type checking.
• It can read and modify files, as well as connect to database systems.
• Performing complicated mathematics and handling big data can be accomplished using Python.
• Python is also useful for developing production-ready software and rapid prototyping.

Must Read: Python Interview Questions

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Python Vs Other Programming Languages 

• Most programming languages use parentheses or semicolons to complete a command. In contrast, Python ends a command using new lines.
• The Python syntax is simple and quite similar to the English language with some influence of mathematics. These make the syntax lucid and readable.
• Defining the scope of loops, classes and functions in Python relies on indentation and uses whitespace. Other programming languages, in contrast, employ curly brackets for defining scopes.
• Due to dynamic typing and built-in high-level data types, Python programs are shorter compared to an equivalent Java or C++ code.

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Real-world Applications of Python 

Let’s go through some Fascinating Python Applications in Real-World –

• Internet and web development – Python offers libraries for Internet protocols like XML, HTML, JSON, IMAP, FTP and e-mail processing.
• Software development – Software developers use Python for build-control, management and testing.
• Desktop GUI application – With toolkits like Tk, Kivy and Delphi, you can draft user interface for applications using Python.
• Science and Numeric – Python has become popular in the scientific community with SciPy, IPython and NumPy.
• Education – Due to its simplicity, Python is excellent as an introductory programming language for children in schools as well as beginners.
• Business – Tryton and Odoo are popular platforms in Python for developing ERP, e-commerce systems and several other business applications.
• 3D graphics and game development using PyGame, PyKyra and other 3D rendering libraries

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Python Jobs

Python is highly sought-after right now. The development of websites, software elements, and applications, as well as the use of Data Science, AI, and ML technologies, all require excellent Python programmers, who are in high demand across all major industries. There was a severe lack of Python programmers in the last year, 2022, the year we were creating this lesson. However, as Python is widely used in the fields of AI and ML, the market is wide open for Python programming professionals. 

Once you go through the entire Python tutorial for beginners, enroll in a Python course, and gain industry-approved certification, you can earn an average salary of $150,000 per year. Nevertheless, it may change depending on where the Job is located. It is impractical to include all the businesses that use Python. A few examples of large businesses are: 

Therefore, any of these large corporations may consider hiring you as their next candidate once you learn Python from scratch. 

Benefits of Learning Python 

• Python works on several platforms like Windows, Linux and Mac.
• Python is suitable for beginners who are new to programming. 
• The syntax is simple and eliminates the need to write elaborate program lines.
• Since the interpreter processes Python at run-time, the programs do not need compilation before the execution that allows quick prototyping.
• Python is an interactive programming language where you can directly interact with the interpreter to write programs.
• Python is object-oriented but can also be treated in a procedural or functional way. Learn more about the benefits of learning python.

Disadvantages of Python 

• Since Python is interpreted, slow execution might prove to be an issue. However, unless high speed is a crucial requirement for the project, Python’s speed limitation is masked by the other benefits it provides.
• Python is outstanding as a server-side language. But, it is not usually seen on the client side. Also, Python is rarely used for implementing smartphone-based applications and is not very strong in mobile computing and browsers.
• Being dynamically-typed, Python eliminates the requirement of declaring the variable type while writing code. While it is advantageous to programmers, it can cause run-time errors.
• Compared to Java DataBase Connectivity and Open DataBase Connectivity, the database access layers of Python are underdeveloped.

Many people have this question, is python an object oriented language. So basically, python is a general-purpose and object-oriented programming language. Its high-level programming capabilities, portability, lucid syntax, and simplicity have made it one of the most popular programming languages, both among advanced level programmers and beginners. 

Also read: Python Developer Salary in India

Conclusion

In this tutorial, we discussed some fundamental features of Python, along with its pros, cons, and real-world use cases.