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9 9 Introduction to Python
Introduction to Python

Pre-Processing

• What is Python? • Features of Python
• Starting Python • Components of Python IDLE Window
• Python Working Modes • Working in Script Mode
• Understanding Variables • Input and Output Operations in Python
• Comments in Programs

A computer is an electronic machine that performs its tasks by accepting commands and instructions
from the user. A set of instructions that let the computer perform a specific task is called a computer
program.
Computer programs are written in languages that the computer
understands and can execute. These languages are known as
Programming languages. C, C++, Visual Basic, and Java are examples
of popular programming languages.

You have learned about the basics of programming using Scratch 3. Let us learn about a new programming
language – Python. Python is an easy language to understand and work with.
WHAT IS PYTHON?

Python is an interpreted, object-oriented, high-level programming language for general-purpose
programming. It was developed during the 1980s by Guido van Rossum, and its first
version was released and implemented in 1991. Its high-level built-in data structures,
combined with dynamic typing makes it very attractive for Rapid Application
Development (RAD). Python’s simple, easy-to-learn syntax emphasises readability
and therefore reduces the cost of program creation and maintenance. Python supports
modules and packages, which encourages program modularity and code reuse.

The standard development environment of Python is called Integrated Development and Learning
Environment (IDLE), and it is suitable for beginners to learn programming in Python. It lets a user write,
debug, and execute code from the same interface. The Python text editor has features, such as
auto-complete, syntax highlighting, smart indents, and dynamic typing.
Many large organisations all over the world use Python. These include Wikipedia, Google, Yahoo!, CERN,
NASA, Facebook, Amazon, Instagram, and Spotify.

FEATURES OF PYTHON
1. Python is easy to learn and use. It is a programmer-friendly language.
2. It is more understandable and readable than other programming languages.

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