pytest Tests
pytest uses plain assert statements with helpful failure messages. Group tests in classes or plain functions.
Python
Beginner
3 min read
pytest Basics
Example
class TestMath:
def test_add(self):
assert 2 + 2 == 4
def test_divide(self):
assert 10 / 2 == 5.0
def test_string():
result = "hello".upper()
assert result == "HELLO"
def test_list():
items = [1, 2, 3]
assert len(items) == 3
assert 2 in items Pro Tip
pytest rewrites assert statements to show the actual vs expected values on failure — no assertEqual needed.