Introduction

Introduction

Python is a high-level, interpreted programming language known for its simplicity, readability, and versatility. Created by Guido van Rossum and first released in 1991, Python has become one of the most popular programming languages in the world. It is widely used in various domains, including web development, data science, artificial intelligence, automation, and more.

Why we use python ?

1. Easy to Learn: Python’s syntax is simple and resembles natural language, making it beginner-friendly.
2. Readable Code: Python emphasizes code readability, using indentation instead of braces.
3. Versatile: Python can be used for almost anything, from building websites to analyzing data and creating machine learning models.
4. Large Community: Python has a massive and active community, which means plenty of tutorials, forums, and libraries are available.
5. Cross-Platform: Python runs on Windows, macOS, Linux, and other operating systems.
6. Rich Ecosystem: Python has a vast collection of libraries and frameworks (e.g., NumPy, Pandas, Django, TensorFlow) that simplify complex tasks.

Key Features of Python

1. Interpreted Language: Python code is executed line by line, making debugging easier.
2. Dynamically Typed: You don’t need to declare variable types explicitly.
3. Object-Oriented: Python supports object-oriented programming (OOP) principles like classes and inheritance.
4. Open Source: Python is free to use and distribute.
5. Extensible: Python can be integrated with other languages like C/C++.

Application of Python

Python is used in a wide range of fields:

1. Web Development: Frameworks like Django and Flask make it easy to build websites.
2. Data Science and Analytics: Libraries like Pandas, NumPy, and Matplotlib are used for data manipulation and visualization.
3. Machine Learning and AI: TensorFlow, PyTorch, and Scikit-learn are popular libraries for building AI models.
4. Automation: Python is widely used for scripting and automating repetitive tasks.
5. Game Development: Libraries like Pygame allow you to create simple games.
6. Scientific Computing: Python is used in fields like physics, biology, and astronomy for simulations and data analysis.

Getting Started with Python

1. Installing Python

• Download Python from the official website: python.org.
• Follow the installation instructions for your operating system.
• Verify the installation by running python --version or python3 --version in your terminal.

2. Writing Your First Program

Create a file called hello.py and write the following code:

print("Hello, World!")

Run the program using:

python hello.py

Output:

Hello, World!