Introduction to Python Programming

Study Notes

What is Python?

Python is a programming language known for its simplicity and ease of use.
It is free and open-source, allowing users to modify and distribute the code.
Classified as a high-level language, it provides a user-friendly syntax.
Developed by Guido van Rossum, enhancing accessibility for beginners.
Portable across various platforms, ensuring compatibility and versatility.

First Python Program

A basic Python program example: print("Hello World"), which outputs a greeting.

Python Character Set

Includes letters (A-Z, a-z), digits (0-9), and special symbols such as +, -, *, /, etc.
Supports whitespaces, including spaces, tabs, and newlines.
Capable of processing all ASCII and Unicode characters within data or literals.

Variables

Variables act as symbolic names for memory locations, facilitating data storage.
Example of variable declarations:
- name = "Shradha"
- age = 23
- price = 25.99

Memory

Memory allocation is demonstrated through variable examples (name, age, price).
Variables maintain their values in specific memory locations.

Rules for Identifiers

Identifiers must follow specific naming conventions that differentiate them from keywords.

Data Types

Common data types in Python include:
- Integers
- Strings
- Floats
- Booleans
- None (indicating the absence of a value)

Keywords

Keywords are reserved words with special meanings in Python; for instance, False must be in uppercase.

Comments in Python

Single-line comments can be created with the # symbol.
Multi-line comments are enclosed within triple quotes: """ comment """.

Types of Operators

Operators perform operations on operands, classified as follows:
- Arithmetic Operators: +, -, *, /, %, **
- Relational/Comparison Operators: ==, !=, >, <, >=

Description

This quiz covers the basics of Python programming, including its characteristics as a high-level language developed by Guido van Rossum. It highlights the simplicity, portability, and open-source nature of Python. Test your knowledge about Python's features and write your first program.