Pytest: Provide a way to access command line options within from settings.py

[inl-pd-autotest]

I have conftest.py (only for fixtures), support.py (where I store my functions used by multiple test modules) and test_*.py modules.
And both conftest.py and support.py import settings.py.
settings.py contains just a single list with settings.
I'd like to make those settings be dependent on the command args passed to pytest.

conftest.py:

...
def pytest_addoption(parser):
    parser.addoption('--buildid', metavar='buildid', default=1, type=int, nargs='*', help='a number to be used as a prefix to separate screenshots for test runs')

@pytest.fixture(scope='module')
def buildid(request):
    return request.config.getoption('--buildid')
...

how to access buildid command line argument from settings.py?
This fails:

print(settings['buildid'])
settings = { "buildid": buildid }

because buildid is a variable pointing to the function, not a variable with text.

[RonnyPfannschmidt]

command line options are intentionally not availiable at import time,
the usual solution to update globals from commandline options is to write a pytest_configure hook that takes the commandline option and puts it into the values

for example
```
def pytest_addoption(parser):
parser.addoption(
'--buildid', metavar='buildid', default=1, type=int, nargs='*',
help='a number to be used as a prefix to separate screenshots for test runs')

def pytest_configure(config):
import settings
settings.buildid = config.getoption('--buildid')
`````

[inl-pd-autotest]

@RonnyPfannschmidt
Thank you!
I had read about pytest_configure(config) in the docs, but that told me almost nothing about what's the use for it.
Using pytest_configure(config) I figured out I didn't need all the pytest fixtures like

@pytest.fixture(scope='module')
def buildid(request):
    return request.config.getoption('--buildid')

which caused way too many complications for me (I had to add each of them as an argument to the test functions in the test modules).
Thanks a lot!