Python Versions: A Concise Tutorial Just An Hour | ACTE
Python Version Tutorial

Python Versions: A Concise Tutorial Just An Hour – FREE

Last updated on 09th Jul 2020, Blog, Tutorials

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Narendra Kumar (Python Developer )

Narendra Kumar is a Python developer with 4+ years of experience in Knime, SAS Enterprise Miner, H2O, Orange, and Apache Mahout. He has expertise in Sublime Text 3, Atom, Jupyter, Spyder, and Spatial Data Mining.

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Python is a high-level, interpreted, interactive and object-oriented scripting language. Python is designed to be highly readable. It uses English keywords frequently whereas the other languages use punctuations. It has fewer syntactical constructions than other languages.

  • Python is Interpreted: Python is processed at runtime by the interpreter. You do not need to compile your program before executing it. This is similar to PERL and PHP.
  • Python is Interactive: You can actually sit at a Python prompt and interact with the interpreter directly to write your programs.
  • Python is Object-Oriented: Python supports Object-Oriented style or technique of programming that encapsulates code within objects.
  • Python is a Beginner’s Language: Python is a great language for the beginner-level programmers and supports the development of a wide range of applications from simple text processing to WWW browsers to games.

Characteristics of Python

Following are important characteristics of python:

  • It supports functional and structured programming methods as well as OOP.
  • It can be used as a scripting language or can be compiled to byte-code for building large applications.
  • It provides very high-level dynamic data types and supports dynamic type checking.
  • It supports automatic garbage collection.
  • It can be easily integrated with C, C++, COM, ActiveX, CORBA, and Java.
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Applications of Python

As mentioned before, Python is one of the most widely used language over the web. I’m going to list few of them here:

  • Easy-to-learn : Python has few keywords, simple structure, and a clearly defined syntax. This allows the student to pick up the language quickly.
  • Easy-to-read: Python code is more clearly defined and visible to the eyes.
  • Easy-to-maintain: Python’s source code is fairly easy-to-maintain.
  • A broad standard library: Python’s bulk of the library is very portable and cross-platform compatible on UNIX, Windows, and Macintosh.
  • Interactive Mode: Python has support for an interactive mode which allows interactive testing and debugging of snippets of code.
  • Portable: Python can run on a wide variety of hardware platforms and has the same interface on all platforms.
  • Extendable: You can add low-level modules to the Python interpreter. These modules enable programmers to add to or customize their tools to be more efficient.
  • Databases: Python provides interfaces to all major commercial databases.
  • GUI Programming: Python supports GUI applications that can be created and ported to many system calls, libraries and windows systems, such as Windows MFC, Macintosh, and the X Window system of Unix.
  • Scalable: Python provides a better structure and support for large programs than shell scripting.

Python Features

Python’s features include:

  • Easy-to-learn: Python has few keywords, simple structure, and a clearly defined syntax. This allows a student to pick up the language quickly.
  • Easy-to-read: Python code is more clearly defined and visible to the eyes.
  • Easy-to-maintain: Python’s source code is fairly easy-to-maintain.
  • A broad standard library: Python’s bulk of the library is very portable and cross-platform compatible on UNIX, Windows, and Macintosh.
  • Interactive Mode: Python has support for an interactive mode which allows interactive testing and debugging of snippets of code.
  • Portable: Python can run on a wide variety of hardware platforms and has the same interface on all platforms.
  • Extendable: You can add low-level modules to the Python interpreter. These modules enable programmers to add to or customize their tools to be more efficient.
  • Databases: Python provides interfaces to all major commercial databases.
  • GUI Programming: Python supports GUI applications that can be created and ported to many system calls, libraries and windows systems, such as Windows MFC, Macintosh, and the X Window system of Unix.
  • Scalable: Python provides a better structure and support for large programs than shell scripting.

Apart from the above-mentioned features, Python has a big list of good features. A, few are listed below −

  • It supports functional and structured programming methods as well as OOP.
  • It can be used as a scripting language or can be compiled to byte-code for building large applications.
  • It provides very high-level dynamic data types and supports dynamic type checking.
  • It supports automatic garbage collection.
  • It can be easily integrated with C, C++, COM, ActiveX, CORBA, and Java

Why Python?

  • Python works on different platforms (Windows, Mac, Linux, Raspberry Pi, etc).
  • Python has a simple syntax similar to the English language.
  • Python has syntax that allows developers to write programs with fewer lines than some other programming languages.
  • Python runs on an interpreter system, meaning that code can be executed as soon as it is written. This means that prototyping can be very quick.
  • Python can be treated in a procedural way, an object-orientated way or a functional way.

Python Install

Many PCs and Macs will have python already installed.

To check if you have python installed on a Windows PC, search in the start bar for Python or run the following on the Command Line (cmd.exe):

C:\Users\Your Name>python –version

To check if you have python installed on a Linux or Mac, then on linux open the command line or on Mac open the Terminal and type:

python –version

If you find that you do not have python installed on your computer, then you can download it for free from the following website: https://www.python.org/

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Python Quickstart

Python is an interpreted programming language, this means that as a developer you write Python (.py) files in a text editor and then put those files into the python interpreter to be executed.

The way to run a python file is like this on the command line:

C:\Users\Your Name>python helloworld.py

Where “helloworld.py” is the name of your python file.

Let’s write our first Python file, called helloworld.py, which can be done in any text editor.

  • helloworld.py
  • print(“Hello, World!”)

Try it Yourself »

Simple as that. Save your file. Open your command line, navigate to the directory where you saved your file, and run:

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