Course Content
Topic 1: Introduction to Python
0/2
Lesson 1.1: What is Python and Why Learn It?
Lesson 1.2: Writing Your First Python Program
Module 2: Variables and Data Types
🎯 Module Objective: To help learners understand how to store, manage, and work with different types of data in Python using variables, and how to recognize and convert between data types.
0/3
Lesson 2.1: Variables and Assignment
Lesson 2.2: Data Types in Python
Lesson 2.3: Type Conversion and Input
Topic 3: Control Flow
🎯 Module Objective This module introduces learners to Python operators used in calculations, comparisons, and logic. Learners will understand how expressions are evaluated and how to build logical conditions using operators.
0/2
Lesson 3.1: Arithmetic Operators
Lesson 3.2: Comparison and Logical Operators
Module 4: Control Flow
🎯 Module Objective: This module introduces the concept of decision-making and repetition in Python programs using: if-else statements for loops while loops break, continue and basic loop control
0/3
Lesson 4.1: If-Else Statements
🔁 Lesson 4.2: Loops (For and While)
🔂 Lesson 4.3: Break and Continue in Loops
Module 5: Functions
🎯 Module Objective: This module helps learners understand how to organize code using functions. They’ll learn how to: Create and call functions Use parameters and return values Understand the concept of scope Get introduced to recursion
0/2
🔧 Lesson 5.1: Defining and Calling Functions
🔁 Lesson 5.2: Scope and Recursion
Module 6: Lists and Tuples
🎯 Module Objective: This module introduces learners to two important data collection types in Python — lists and tuples. Learners will: Create, access, and modify lists Use list methods like append(), remove(), sort() Understand the difference between mutable (lists) and immutable (tuples)
0/2
🧺 Lesson 6.1: Introduction to Lists
🔒 Lesson 6.2: Tuples and Immutability
Module 7: Dictionaries and Sets
🎯 Module Objective: This module introduces two powerful Python data types: Dictionaries: for storing key–value pairs Sets: for storing unordered, unique items Learners will: Understand the syntax and usage of dictionaries and sets Perform operations like adding, removing, updating Use dictionary methods (get(), update(), keys(), values())
0/2
🗂️ Lesson 7.1: Python Dictionaries
🔣 Lesson 7.2: Python Sets
Module 8: File Handling
🎯 Module Objective: This module introduces learners to the basics of file handling — reading from and writing to text files using Python. Learners will: Open and read from a file Write to and append content in a file Use the with statement for safe file handling
0/1
📂 Lesson 8.1: Reading and Writing Files
🛠️ Module 9: Error Handling in Python
🎯 Module Objective: This module introduces learners to error handling in Python — a critical skill for writing stable and reliable programs. Learners will: Understand what exceptions are Learn how to use try, except, else, and finally Handle common Python errors (e.g., ZeroDivisionError, ValueError, FileNotFoundError) Write code that doesn’t crash when unexpected issues occur
0/1
🛑 Lesson 9.1: Try-Except Block
Module 10: Final Project
🎯 Module Objective: To help learners consolidate and apply all the skills they’ve gained throughout the course by building a small, real-world project. Upon successful completion, learners can earn a course completion certificate via Tutor LMS.
0/4
🗂️ Lesson 10.1: Option 1: Student Report Card Generator
📅 Lesson 10.2: Option 2: To-Do List Manager (with File Storage)
🧮 Lesson 10.3: Option 3: Simple Calculator App
Lesson 10.4: Course Recap
Python for Absolute Beginners: From Zero to Hero
About Lesson

🎯 Learning Objectives

By the end of this lesson, learners will be able to:

  • Understand what exceptions are

  • Use try and except to catch and handle errors

  • Handle specific exceptions like ZeroDivisionError, ValueError, etc.

  • Use else and finally blocks for complete error management

  • Prevent crashes and build reliable programs

📚 Lesson Content

🔹 What is an Exception?

An exception is an error that occurs during program execution.
If not handled, it will stop the program.

Example of an unhandled exception:

python
num = int("abc") # ValueError: invalid literal for int()

🔸 Basic Try-Except Syntax

python
try:
# risky code
except:
# code to run if error occurs

✅ This prevents the program from crashing when an error happens.

🔸 Example: Handling Division by Zero

python
try:
number = int(input("Enter a number: "))
print(10 / number)
except ZeroDivisionError:
print("You cannot divide by zero!")

🔸 Handling Multiple Specific Exceptions

python
try:
num = int(input("Enter a number: "))
print(10 / num)
except ZeroDivisionError:
print("Error: Cannot divide by zero.")
except ValueError:
print("Error: Please enter a valid number.")

🔸 Using else and finally

python
try:
value = int(input("Enter your age: "))
except ValueError:
print("Not a number.")
else:
print("You entered:", value)
finally:
print("Done checking.")
Block Purpose
try Code that might cause an exception
except Executes when an exception occurs
else Executes if no error occurs
finally Executes always, useful for cleanup like file.close()

🔁 Real-World Example: File Handling with Error Catching

python
try:
with open("notes.txt") as file:
print(file.read())
except FileNotFoundError:
print("File not found!")
finally:
print("End of program.")

⚠️ Common Mistakes

Mistake Why It’s Wrong
Catching all exceptions blindly Hides useful error details
Using except: without specifying Should be avoided unless absolutely necessary
Not using finally for cleanups Risk of open resources (e.g., open files)

📝 Assignment

Write a program that:

  1. Asks the user to input two numbers

  2. Tries to divide them

  3. Catches ZeroDivisionError and ValueError

  4. Uses finally to print "Operation complete."

 

Previous
Next
Scroll to Top