Conditional parametrize in PyTest - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to parametrize the test with values 1, 2, and 3.

PyTest

import pytest

@pytest.mark.parametrize('num', [1])
def test_is_positive(num):
    assert num > 0

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

A(1, 2, 3)

B[1, 2, 3]

C{1, 2, 3}

D'1,2,3'

Attempts:

3 left

💡 Hint

Common Mistakes

Using a string instead of a list or tuple.

Using curly braces which create a set, not a list or tuple.

The @pytest.mark.parametrize decorator expects an iterable like a list or tuple. Here, a list [1, 2, 3] is used to pass the values.

2fill in blank

medium

Complete the code to skip the test when the parameter is 0.

PyTest

import pytest

@pytest.mark.parametrize('num', [0, 1, 2])
def test_non_zero(num):
    if num == 0:
        pytest.skip([1])
    assert num != 0

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

A'Skipping zero value'

B0

CTrue

DNone

Attempts:

3 left

💡 Hint

Common Mistakes

Passing None or non-string values to pytest.skip().

Not providing any message.

The pytest.skip() function takes a string message explaining why the test is skipped. Here, we provide a clear message.

3fill in blank

hard

Fix the error in the conditional parametrize to only run test for even numbers.

PyTest

import pytest

values = [1, 2, 3, 4]
@pytest.mark.parametrize('num', [v for v in values if [1]])
def test_even(num):
    assert num % 2 == 0

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Av % 2 = 0

Bv // 2 == 0

Cv % 2 == 0

Dv & 2 == 0

Attempts:

3 left

💡 Hint

Common Mistakes

Using assignment operator '=' instead of comparison '=='.

Using integer division '//' which does not check evenness.

Using bitwise AND incorrectly.

The condition v % 2 == 0 correctly checks if a number is even by testing if the remainder when divided by 2 is zero.

4fill in blank

hard

Fill both blanks to parametrize test only for numbers greater than 2 and skip others.

PyTest

import pytest

values = [1, 2, 3, 4]
@pytest.mark.parametrize('num', [v for v in values if v [1] [2]])
def test_greater_than_two(num):
    assert num > 2

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

A>

B2

C<

D3

Attempts:

3 left

💡 Hint

Common Mistakes

Using less than operator which selects wrong values.

Using wrong number in comparison.

The list comprehension filters values where v > 2, so only numbers greater than 2 are tested.

5fill in blank

hard

Fill all three blanks to parametrize test with uppercase strings only and skip lowercase.

PyTest

import pytest

words = ['Hello', 'WORLD', 'test', 'PYTHON']
@pytest.mark.parametrize('word', [w for w in words if w.[1]() == w])
def test_uppercase(word):
    if not word.isupper():
        pytest.skip([2])
    assert word.isupper() is [3]

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

Aupper

B'Skipping lowercase word'

CTrue

Dlower

Attempts:

3 left

💡 Hint

Common Mistakes

Using lower() instead of upper() in the filter.

Not providing a skip message.

Asserting with incorrect boolean value.

The list comprehension uses w.upper() to check if the word is uppercase. The skip message explains skipping lowercase words. The assertion checks that word.isupper() is True.