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How to Use pytest Fixtures and conftest.py for Shared Setup in Python

Learn how to define reusable pytest fixtures for shared setup and use them to keep tests clean and maintainable.

pytest fixtures conftest
Python 
import pytest

class Calculator:
    def add(self, a, b):
        return a + b

    def multiply(self, a, b):
        return a * b


@pytest.fixture
def calc():
    return Calculator()


@pytest.fixture
def sample_numbers():
    return (3, 5)


def test_add(calc, sample_numbers):
    a, b = sample_numbers
    assert c…
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