Use fixture instance in non-test classes

[peppe-russo]

Hello everyone, I'm writing a pytest plugin that uses pytest-vnc as a dependency. The way I use it is to wrap it around my own custom fixture to override the sleep method, like so:

# conftest.py
@pytest.fixture(scope='session')
def qt_vnc(vnc):
    vnc.sleep = sleep
    return vnc

I then have an Area class in another file that I use quite often around my plugin, which needs to use that VNC instance (or more precisely, the qt_vnc fixture), example:

# area.py
from dataclasses import dataclass, asdict
from pytest_vnc import RectLike

@dataclass
class Area(RectLike):
    x: int
    y: int
    width: int
    height: int

    def capture():
        qt_vnc.capture(**asdict(self))  # <- How can access qt_vnc here?

The current way I'm doing this is to have an optional vnc field to the Area class and just pass the fixture to it when I instanciate the class, which doesn't look very elegant and it's not always possible as I use this class from places where I can't easily access the fixture.

Is there a "proper" way to make the qt_vnc fixture like a global singleton or something like that so I can access it from my custom classes? (The Area class is not the only class that needs to use it).

Thanks in advance,
Peppe