Python Programming

What is Python?

This lesson explains What is Python? as part of Introduction to Python in the Python Programming course. It introduces the core concepts, terminology, workflow, and practical use of the topic.

Python Syntax and Indentation

Python uses a simple and readable syntax. One of its important characteristics is that indentation is used to define blocks of code.

Important Concepts

• Understand the definition and purpose of the topic.
• Learn the important terminology and components.
• Understand the typical workflow or implementation steps.
• Identify practical use cases and common mistakes.
• Practice the concept with a small exercise.

Indentation

Indentation means the spaces at the beginning of a line. Python uses indentation to identify statements belonging to a block.

Example

age = 20 if age >= 18:    print("Adult")

The indented print statement belongs to the if block.

Comments

Comments are used to explain code and are ignored during program execution.

# This is a single-line comment name = "Python"  # Store language name

Identifiers

Identifiers are names used for variables, functions, classes and other programming elements.

Basic Rules

• Identifiers can contain letters, digits and underscores.
• An identifier cannot start with a digit.
• Python identifiers are case-sensitive.
• Keywords should not be used as identifiers.

Key Points

• Indentation is important in Python.
• Consistent indentation makes programs readable.
• Use practical examples to reinforce the concept.
• Python uses a colon to introduce many code blocks.