Python Fundamentals

This lesson introduces Python, a versatile and beginner-friendly programming language. You'll learn:

• What Python is and why it's widely used

• Real-world applications of Python

• How to install Python and set up your coding environment

• Basic syntax to write your first Python program

By the end of this lesson, you'll be able to write and run simple Python code using an IDE like VS Code or IDLE.

In this lesson, you'll learn:

• How to use the print() function to display output

• How to write Python code in a script file

• How to run Python scripts from an IDE or terminal

By the end, you'll be able to write and execute simple Python programs that interact with the user and display results.

In this lesson, you'll learn:

• How Python uses indentation to define code blocks

• The rules and best practices for indentation

• How to write single-line and multi-line comments to document your code

By the end, you’ll be able to structure Python code properly and add helpful notes for yourself and others.

In this lesson, you'll learn:

• How to create and use variables in Python

• The main data types: numbers, strings, and booleans

• What dynamic typing means and how it works in Python

By the end, you’ll be able to declare variables, understand their types, and use them effectively in your programs.

In this lesson, you'll learn:

• How to use the input() function to get user input

• How to format output using f-strings for clean, readable results

By the end, you’ll be able to write interactive Python programs that take input and display customized output.

In this lesson, you'll learn:

• How to perform mathematical operations using arithmetic operators

• How to update variable values using assignment operators

• The difference between regular division and floor division

By the end, you’ll be able to write expressions and manipulate variables with confidence.

By the end of this lesson, you'll be able to:

• Use comparison operators to evaluate conditions.

• Combine conditions using logical operators.

• Write decision-making code using if, and, or, and not.

• Understand how these operators work with Boolean logic.

By the end of this lesson, you'll be able to:

• Use if, elif, and else to control program flow.

• Write nested conditions for complex decision-making.

• Build a grading system that evaluates scores and gives feedback.

By the end of this lesson, you'll understand:

• How to use for and while loops.

• How to iterate over ranges, lists, and other collections.

• How to control loop flow using break and continue.

Mini Project

What You’ll Learn:

• What lists are and why they are useful.

• How to create a list with multiple data types.

• How to access, modify, and slice list items.

• How to use built-in list methods like append(), remove(), and sort().

What You’ll Learn:

• What makes tuples different from lists.

• How to create and use tuples.

• The concept of immutability (cannot change elements after creation).

• How to unpack tuples into multiple variables.

What You’ll Learn:

• How sets automatically remove duplicate values.

• How to create a set using {} or set().

• How to combine sets with union and find common elements with intersection.

What You’ll Learn:

• What dictionaries are and why they are useful.

• How to create a dictionary using {} or dict().

• How to access values using keys.

• How to update existing entries and add new ones.

• How to delete items from a dictionary.

Mini Project: Contact Book Using Dictionary

Functions are reusable blocks of code that perform a specific task. They help organize programs into smaller, manageable pieces, making code cleaner and more efficient. In this lesson, learners will:

• Understand how to define a function using the def keyword.

• Learn how to pass parameters to functions.

• Explore how functions return values using the return statement.

• Practice writing and calling custom functions.

Function arguments allow us to pass data into functions in flexible ways. Python supports several types of arguments:

• Positional arguments: Passed in order.

• Keyword arguments: Passed by name.

• Default arguments: Have default values.

• *args: Accepts variable number of positional arguments.

• **kwargs: Accepts variable number of keyword arguments.

In this lesson, learners will explore each type with examples and understand when and why to use them.

Lambda functions are small, anonymous functions defined using the lambda keyword. They’re ideal for short, throwaway tasks—especially when used with functions like map(), filter(), or sorted().

In this lesson, learners will:

• Understand what lambda functions are and when to use them.

• Learn the syntax of lambda functions.

• Compare lambda functions with regular def functions.

• Practice using lambdas in real-world scenarios.

Python’s modular design allows code to be organized into reusable components called modules and packages. This lesson introduces:

• The import keyword for accessing external code.

• How to use built-in modules like math and random.

• The difference between modules and packages.

• Practical examples of importing and using functions.

Reading files is essential for working with stored data. Python makes this easy with the built-in open() function. In this lesson, learners will:

• Understand how to open files in read mode.

• Learn how to read text files line by line or all at once.

• Explore best practices like closing files and using with statements.

Writing to files allows programs to store output, logs, or user data. In this lesson, learners will:

• Write new content to a file (overwriting existing data).

• Append data to an existing file.

• Use best practices like the with statement for safe file handling.

Errors are inevitable in programming. Python provides tools to gracefully handle them using try, except, and finally. In this lesson, learners will:

• Understand the need for error handling.

• Use try, except, and finally blocks.

• Handle specific exceptions like FileNotFoundError, ValueError, and more.

Python comes with powerful built-in libraries that simplify common tasks. In this lesson, learners will:

• Work with dates and times using datetime.

• Interact with the operating system using os.

• Handle structured data using json.