Just a snippet for Pytest files.

pytest.sublime-snippet

<snippet>
    <content><![CDATA[
import pytest


@pytest.mark.parametrize('input, expected', [
    ('2 + 3', 5),
    ('6 - 4', 2),
    pytest.mark.xfail(('5 + 2', 8))
])
def test_equations(input, expected):
    """Test that equation works"""
    assert eval(input) == expected


def setup_module(module):
    """Run at the start of a testing module (module)"""
    pass


def teardown_module(module):
    """Run at the end of a testing module (file)"""
    pass


class TestPyTestClass(object):

    @classmethod
    def setup_class(cls):
        """Setup the class"""
        pass

    @classmethod
    def teardown_class(cls):
        """Teardown the class"""
        pass

    def setup_method(method):
        """Setup a method"""
        pass

    def teardown_method(method):
        """Teardown a method"""
        pass

    @pytest.mark.parametrize('input, expected', [
        ('2 + 3', 5),
        ('6 - 4', 2),
        pytest.mark.xfail(('5 + 2', 8))
    ])
    def test_equations(self, input, expected):
        """Test that equation works"""
        assert eval(input) == expected


def setup_function(function):
    """Setup a function"""
    pass


def teardown_function(function):
    """Teardown a function"""
    pass

]]></content>
    <tabTrigger>pytestfile</tabTrigger>
    <scope>source.python</scope>
</snippet>