Checking membership (in, not in) in PyTest - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to check if 'apple' is in the fruits list.

PyTest

def test_apple_in_fruits():
    fruits = ['apple', 'banana', 'cherry']
    assert 'apple' [1] fruits

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

Ain

B!=

C==

Dnot in

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'not in' instead of 'in' will fail the test.

The in keyword checks if an item is present in a list. Here, 'apple' should be in the fruits list, so in is correct.

2fill in blank

medium

Complete the code to check that 'grape' is not in the fruits list.

PyTest

def test_grape_not_in_fruits():
    fruits = ['apple', 'banana', 'cherry']
    assert 'grape' [1] fruits

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

Ain

B==

Cnot in

D!=

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'in' instead of 'not in' will cause the test to fail.

The not in keyword checks that an item is not present in a list. Since 'grape' is not in fruits, not in is correct.

3fill in blank

hard

Fix the error in the assertion to check if 'banana' is in the fruits list.

PyTest

def test_banana_in_fruits():
    fruits = ['apple', 'banana', 'cherry']
    assert 'banana' [1] fruits

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

A==

Bnot in

C!=

Din

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'not in' will cause the test to fail incorrectly.

The assertion should check if 'banana' is present in the list using in. Using not in or other operators is incorrect here.

4fill in blank

hard

Fill both blanks to create a test that checks if 'orange' is not in the fruits list and 'cherry' is in the fruits list.

PyTest

def test_fruits_membership():
    fruits = ['apple', 'banana', 'cherry']
    assert 'orange' [1] fruits
    assert 'cherry' [2] fruits

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

Anot in

B==

Cin

D!=

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up 'in' and 'not in' keywords.

The first assertion checks that 'orange' is not in the list, so not in is correct. The second checks that 'cherry' is in the list, so in is correct.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that includes only fruits that are in the allowed list.

PyTest

def test_allowed_fruits():
    fruits = ['apple', 'banana', 'cherry', 'date']
    allowed = ['banana', 'date', 'fig']
    filtered = {fruit: True for fruit in fruits if fruit [1] allowed and fruit [2] 'apple' and fruit [3] 'fig'}
    assert 'banana' in filtered
    assert 'apple' not in filtered
    assert 'fig' not in filtered

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

Ain

Bnot in

C!=

D==

Attempts:

3 left

💡 Hint

Common Mistakes

Using not in instead of != for string comparisons.

The comprehension includes fruits that are in the allowed list (in), but excludes 'apple' and 'fig' by checking they are not equal to those strings using !=. Using not in would be incorrect here because 'apple' and 'fig' are strings, not collections.