Introduction

    • Python is a high-level programming language that can be used for many different purposes.
    • It was created by Guido van Rossum in 1989 while he was working at the National Research Institute in the Netherlands.
    • Python became officially available to the public on February 20th, 1991, which is considered its "birthday."
    • Python is often recommended as the first programming language for beginners because it’s easy to learn and understand.

Origin of Python's Name

The name "Python" was inspired by the British TV show Monty Python's Flying Circus, which aired on the BBC from 1969 to 1974. 

 Development of Python

Guido van Rossum created Python by incorporating various programming features from other languages:

    • Functional programming features from C.
    • Object-oriented programming concepts from C++.
    • Scripting language elements from Perl and Shell scripting.
    • Modular programming ideas from Modula-3.

Where Can We Use Python?

Python can be used in many areas. Some of the most common ones are:

    • Creating desktop applications.
    • Building web applications.
    • Developing database applications.
    • Network programming.
    • Designing games.
    • Data analysis.
    • Working with machine learning.
    • Developing artificial intelligence (AI) applications.
    • Creating projects for the Internet of Things (IoT).

Why Python?

    • Python works on many different devices like Windows computers, Macs, Linux systems, and even Raspberry Pi.
    • Its rules for writing code are simple and look a lot like regular English, making it easier to learn.
    • Python allows you to write less code compared to other programming languages, which makes it faster to get things done.
    • Python runs code as you write it, so you can test things out quickly without waiting.
    • You can use Python in different ways: to write step-by-step instructions (procedural), to work with objects and classes (object-oriented), or to use functions (functional programming).

Features of Python

  1. Simple and Easy to Learn:

    • Python has a straightforward syntax that resembles English, making it easy to read and write.
    • It uses fewer keywords (about 30+), leading to cleaner and more readable code.
    • Programs can be written with fewer lines compared to many other languages, which simplifies development and reduces costs.
  2. Freeware and Open Source:

    • Python is free to use and distribute, with no licensing fees.
    • Its source code is open, allowing for customization to fit specific needs (e.g., Jython, a version of Python that integrates with Java).
  3. High-Level Language:

    • Python is a high-level language, which means it handles complex tasks like memory management automatically, making it more user-friendly for programmers.
  4. Platform Independent:

    • Python programs can run on any platform without modification. The Python Virtual Machine (PVM) handles the conversion to machine code.
  5. Portability:

    • Python programs are easily portable between different platforms. They will produce consistent results regardless of the operating system.
  6. Dynamically Typed:

    • In Python, you don’t need to specify variable types explicitly. The type is determined automatically based on the value assigned, which adds flexibility to programming.
  7. Supports Both Procedure-Oriented and Object-Oriented Programming:

    • Python combines features from both procedural programming (like C) and object-oriented programming (like C++), providing the benefits of both approaches.
  8. Interpreted Language:

    • Python code is not compiled explicitly. The Python interpreter handles compilation and execution. If there are syntax errors, the interpreter will flag them before execution.
  9. Extensible:

    • Python can integrate with code written in other languages, allowing you to leverage existing libraries and improve performance.
  10. Embedded:

    • Python can be embedded within other language programs, making it versatile for various applications.
  11. Extensive Library:

    • Python comes with a rich set of built-in libraries that offer a wide range of functionalities, so you don’t have to write everything from scratch.

Limitations of Python

  1. Performance: Python may not be as fast as some other languages because it is interpreted rather than compiled.
  2. Mobile Applications: Python is not commonly used for developing mobile applications compared to other languages like Java or Swift.

Python Syntax Compared to Other Programming Languages

  • Readability and Design:

    • Python was created with readability in mind, featuring syntax that resembles plain English and incorporates mathematical influences. This makes it more accessible and intuitive.
  • Command Terminators:

    • In Python, new lines are used to signify the end of a command. This contrasts with many other languages that use semicolons or parentheses to separate commands.
  • Indentation and Scope:

    • Python uses indentation (whitespace) to define the scope of loops, functions, and classes. For example, blocks of code are indented to show which statements are part of the same scope.
    • In contrast, many other programming languages, like C, C++, and Java, use curly braces {} to define blocks of code and manage scope.

Top Companies Using Python

Many leading tech companies use Python, including:

  • Google
  • Microsoft
  • IBM
  • Yahoo

Python Versions

  • Python 1.0 was released in January 1994.
  • Python 2.0 came out in October 2000.
  • Python 3.0 was introduced in December 2008.

Note: Python 3 is not backward compatible with Python 2, meaning that programs written in Python 2 might not work in Python 3 without changes.