Python Exception Handling Practice Questions with Solutions

Exception handling helps you manage runtime errors without crashing your program. By using try, except, else, and finally, you can write safer and more reliable Python code. In this practice set, you’ll solve beginner-friendly exception handling questions with complete solutions. Python Exception Handling practice questions with solutions help to understand the concepts.

1. Python Program to Handle Division by Zero

Difficulty: Foundation

Problem Statement

Write a Python program to divide two numbers and handle the ZeroDivisionError.

Python Solution

try:
    num1 = 20
    num2 = 0

    result = num1 / num2
    print(result)

except ZeroDivisionError:
    print("Cannot divide by zero.")

Sample Output

Cannot divide by zero.

Explanation

The try block contains code that may raise an error. The except block handles the ZeroDivisionError.

Concepts Covered

• try
• except
• ZeroDivisionError

2. Python Program to Handle Invalid User Input

Difficulty: Foundation

Problem Statement

Write a Python program to accept a number from the user and handle invalid input.

Python Solution

try:
    number = int(input("Enter a number: "))
    print("You entered:", number)

except ValueError:
    print("Please enter a valid integer.")

Sample Output

Enter a number: abc
Please enter a valid integer.

Explanation

If the user enters text instead of a number, Python raises a ValueError.

Concepts Covered

• ValueError
• User Input

3. Python Program to Handle File Not Found Error

Difficulty: Foundation

Problem Statement

Write a Python program to open a file and handle the FileNotFoundError.

Python Solution

try:
    file = open("student.txt", "r")
    print(file.read())
    file.close()

except FileNotFoundError:
    print("File not found.")

Sample Output

File not found.

Explanation

The exception is raised if the specified file does not exist.

Concepts Covered

• FileNotFoundError

4. Python Program Using try and else

Difficulty: Foundation

Problem Statement

Write a Python program that divides two numbers and prints a success message using the else block.

Python Solution

try:
    result = 20 / 5

except ZeroDivisionError:
    print("Division by zero is not allowed.")

else:
    print("Result:", result)
    print("Division completed successfully.")

Sample Output

Result: 4.0
Division completed successfully.

Explanation

The else block runs only when no exception occurs.

Concepts Covered

• else

5. Python Program Using finally

Difficulty: Practice

Problem Statement

Write a Python program that always prints "Program Ended" using the finally block.

Python Solution

try:
    number = 10 / 2
    print(number)

except ZeroDivisionError:
    print("Error")

finally:
    print("Program Ended")

Sample Output

5.0
Program Ended

Explanation

The finally block always executes, whether an exception occurs or not.

Concepts Covered

• finally

6. Python Program to Handle Multiple Exceptions

Difficulty: Practice

Problem Statement

Write a Python program to handle both ValueError and ZeroDivisionError.

Python Solution

try:
    number = int(input("Enter a number: "))
    result = 100 / number
    print(result)

except ValueError:
    print("Invalid number.")

except ZeroDivisionError:
    print("Cannot divide by zero.")

Sample Output

Enter a number: 0
Cannot divide by zero.

Explanation

Multiple except blocks allow different errors to be handled separately.

Concepts Covered

• Multiple Exceptions

7. Python Program to Raise a Custom Exception

Difficulty: Practice

Problem Statement

Write a Python program that raises an exception if age is less than 18.

Python Solution

age = 16

if age < 18:
    raise Exception("Age must be 18 or above.")

print("Eligible")

Sample Output

Exception: Age must be 18 or above.

Explanation

The raise keyword allows you to create and throw your own exceptions.

Concepts Covered

• raise

8. Python Program to Catch Any Exception

Difficulty: Challenge

Problem Statement

Write a Python program to catch any exception using a generic except block.

Python Solution

try:
    number = int("Python")

except Exception as error:
    print("Error:", error)

Sample Output

Error: invalid literal for int() with base 10: 'Python'

Explanation

The generic Exception class catches most runtime errors.

Concepts Covered

• Exception
• Exception Object

9. Python Program to Handle IndexError

Difficulty: Challenge

Problem Statement

Write a Python program to handle an IndexError.

Python Solution

try:
    numbers = [10, 20, 30]

    print(numbers[5])

except IndexError:
    print("Index is out of range.")

Sample Output

Index is out of range.

Explanation

An IndexError occurs when you access a list index that doesn’t exist.

Concepts Covered

• IndexError

10. Python Program to Handle KeyError

Difficulty: Challenge

Problem Statement

Write a Python program to handle a KeyError while accessing a dictionary.

Python Solution

student = {
    "name": "John",
    "age": 20
}

try:
    print(student["course"])

except KeyError:
    print("Key not found.")

Sample Output

Key not found.

Explanation

A KeyError occurs when a dictionary key does not exist.

Concepts Covered

• KeyError

Chapter Summary

After completing this chapter, you have learned:

• try
• except
• else
• finally
• Handling ZeroDivisionError
• Handling ValueError
• Handling FileNotFoundError
• Handling IndexError
• Handling KeyError
• Handling multiple exceptions
• Raising custom exceptions

Written by Shubhranshu Shekhar, who has trained 20000+ students in coding.

Rishabh Kumar