Common exception types in Python - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to catch a division by zero error.

Python

try:
    result = 10 / 0
except [1]:
    print("Cannot divide by zero!")

Drag options to blanks, or click blank then click option'

AValueError

BZeroDivisionError

CTypeError

DIndexError

Attempts:

3 left

💡 Hint

Common Mistakes

Using ValueError instead of ZeroDivisionError.

Using TypeError which is for wrong data types.

The ZeroDivisionError is raised when you try to divide a number by zero.

2fill in blank

medium

Complete the code to catch an error when accessing a list index that does not exist.

Python

my_list = [1, 2, 3]
try:
    print(my_list[5])
except [1]:
    print("Index out of range!")

Drag options to blanks, or click blank then click option'

AKeyError

BValueError

CAttributeError

DIndexError

Attempts:

3 left

💡 Hint

Common Mistakes

Using KeyError which is for dictionary keys.

Using AttributeError which is for missing object attributes.

IndexError occurs when you try to access an index that is not in the list.

3fill in blank

hard

Fix the error in the code by catching the correct exception type when converting a string to an integer.

Python

user_input = "abc"
try:
    number = int(user_input)
except [1]:
    print("Invalid number!")

Drag options to blanks, or click blank then click option'

AValueError

BTypeError

CNameError

DZeroDivisionError

Attempts:

3 left

💡 Hint

Common Mistakes

Using TypeError which is for wrong data types, not invalid values.

Using ZeroDivisionError which is unrelated.

ValueError is raised when conversion from string to int fails due to invalid format.

4fill in blank

hard

Fill both blanks to catch errors when opening a file that does not exist and when reading from it.

Python

try:
    with open('missing.txt', '[1]') as file:
        content = file.read()
except [2]:
    print("File error occurred.")

Drag options to blanks, or click blank then click option'

Ar

Bw

CFileNotFoundError

DIOError

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'w' mode which creates a file instead of reading.

Catching IOError instead of FileNotFoundError.

Opening a file for reading uses mode 'r'. If the file is missing, FileNotFoundError is raised.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that includes only keys with string values longer than 3 characters.

Python

data = {'a': 'cat', 'b': 'elephant', 'c': 42}
result = {k: v for k, v in data.items() if isinstance(v, [1]) and len(v) [2] [3]

Drag options to blanks, or click blank then click option'

Astr

B>

C3

Dint

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'int' instead of 'str' for type check.

Using '<' instead of '>' for length comparison.

We check if the value is a string with isinstance(v, str), then check if its length is greater than 3.