Multiple exception handling in Python - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ Predict Output

intermediate

Output of multiple except blocks

What is the output of this Python code with multiple except blocks?

Python

try:
    x = int('abc')
except ValueError:
    print('ValueError caught')
except Exception:
    print('General exception caught')

A General exception caught

B ValueError caught

C No output

D SyntaxError

💡 Hint

The code tries to convert a string that cannot be converted to int.

The int('abc') raises a ValueError, so the first except block catches it and prints 'ValueError caught'.

❓ Predict Output

intermediate

Which except block runs?

What will be printed when this code runs?

Python

try:
    result = 10 / 0
except ZeroDivisionError:
    print('ZeroDivisionError handled')
except ArithmeticError:
    print('ArithmeticError handled')

A ZeroDivisionError and ArithmeticError handled

B ArithmeticError handled

C ZeroDivisionError handled

D No output

💡 Hint

ZeroDivisionError is a subclass of ArithmeticError.

The ZeroDivisionError is raised and caught by the first matching except block, so only 'ZeroDivisionError handled' is printed.

❓ Predict Output

advanced

Output with multiple exceptions in one except

What is the output of this code?

Python

try:
    x = int('10a')
except (ValueError, TypeError):
    print('Caught ValueError or TypeError')
except Exception:
    print('Caught other Exception')

A No output

B Caught other Exception

C SyntaxError

D Caught ValueError or TypeError

💡 Hint

int('10a') raises a ValueError.

The ValueError is caught by the except block that handles both ValueError and TypeError.

❓ Predict Output

advanced

Exception hierarchy and except order

What will this code print?

Python

try:
    {}['key']
except KeyError:
    print('KeyError caught')
except LookupError:
    print('LookupError caught')

A KeyError caught

B LookupError caught

C No output

D TypeError

💡 Hint

KeyError is a subclass of LookupError.

The KeyError is raised and caught by the first except block that matches it exactly.

❓ Predict Output

expert

Output with nested try-except and multiple exceptions

What is the output of this nested try-except code?

Python

try:
    try:
        x = 1 / 0
    except TypeError:
        print('Inner TypeError')
except ZeroDivisionError:
    print('Outer ZeroDivisionError')

A Outer ZeroDivisionError

B No output

C Inner TypeError

D ZeroDivisionError not caught

💡 Hint

The inner except does not catch ZeroDivisionError, so it propagates to outer except.

The ZeroDivisionError is not caught by the inner except, so it is caught by the outer except block.