Assert with messages in PyTest - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to add a message to the assertion.

PyTest

def test_sum():
    result = 2 + 2
    assert result == 4, [1]

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

Aassert result == 4

BSum should be 4

Cprint('Sum is 4')

D"Sum should be 4"

Attempts:

3 left

💡 Hint

Common Mistakes

Forgetting to put the message in quotes.

Using print instead of an assert message.

Not adding a comma before the message.

The assert statement can include a message string after a comma to show when the assertion fails.

2fill in blank

medium

Complete the code to assert that a list contains 3 items with a message.

PyTest

def test_list_length():
    items = [1, 2, 3]
    assert len(items) == [1], "List should have 3 items"

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

A3

B2

C4

D5

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong number for the length.

Forgetting that len() returns an integer.

The list has 3 items, so the assertion checks if length equals 3.

3fill in blank

hard

Fix the error in the assertion message syntax.

PyTest

def test_value():
    value = 10
    assert value > 5 [1] "Value should be greater than 5"

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

A:

B,

C;

D.

Attempts:

3 left

💡 Hint

Common Mistakes

Using colon or semicolon instead of comma.

Omitting the separator between condition and message.

The assert statement uses a comma to separate the condition and the message string.

4fill in blank

hard

Fill both blanks to assert two conditions with messages.

PyTest

def test_multiple():
    x = 7
    y = 3
    assert x > y[1] "x should be greater than y"
    assert y > 0[2] "y should be positive"

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

A,

B:

C;

D.

Attempts:

3 left

💡 Hint

Common Mistakes

Using different punctuation marks.

Forgetting the comma in one of the asserts.

Each assert statement uses a comma to separate the condition and the message.

5fill in blank

hard

Fill all three blanks to assert dictionary key presence with messages.

PyTest

def test_dict_keys():
    data = {'name': 'Alice', 'age': 30}
    assert 'name' [1] data, "Key 'name' missing"
    assert 'age' [2] data, "Key 'age' missing"
    assert 'email' [3] data, "Key 'email' missing"

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

Ain

Bnot in

C==

D!=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '==' or '!=' instead of 'in' or 'not in'.

Mixing up 'in' and 'not in' for presence checks.

To check if a key is present in a dictionary, use 'in'. To check absence, use 'not in'.