This is solved, I was being dumb. Please see second EDIT below

This isn't really language specific, but if it helps I'm using Python. I can get the parameters just fine with the Traitlets module, but I'm still a novice really and figuring out which patterns to use is challenging.

Say you have a bunch of command line parameters. Some are booleans, where their presence means True, absence means False. Other parameters must accept one text string, and others can be used multiple times to build a list of strings.

It feels inefficient/wrong to use a bunch of IF/THEN/ELSE statements to decide what to do with the parameters, and prone to edge case errors. Is there a pattern that would invoke the correct method based on the combination of input parameters?

Examples:

app thing --dry-run --create --name=newname01 --name=newname02 --verbose

app thing --create --name=newname01 --name=newname02 --name=newname03

app job --cancel -i 01 -i 02 -i 03

EDIT: Via the Traitlets module, I get those arguments parsed and accessible as self.argname, so getting them into my app is working great. It's just deciding what to do with them that is confusing me.

Thank you, sorry for my noobness.

EDIT2: I think I understand where I'm going wrong:

I'm creating subcommands based on objects, not actions. i.e. appname thing --action should really be appname action --thing. Once things are divided up into actions, assigning things to those actions will be much, much easier and straightforward.

Sorry for a confusing and fairly pointless post :(

I am writing an object-oriented app to help our developers manage some cloud systems. I'd like to make the configuration information available to all the classes, but I'm not sure of a good way to do that. Everything I can think of seems to fall under the category of "global variables" which as far as I know is a Very Bad Thing.

I already have a logging Mixin class that enables logging for every class that inherits it, and I was wondering if that's the right way to approach the configuration data:

class LoggingMixin:
    @classmethod
    @property
    def log(cls):
        return logging.getLogger(cls.__name__)

class TestClassA(LoggingMixin):
    def testmethod1(self):
        self.log.debug("debug message from test class A")

if __name__ == "__main__":
    logging.basicConfig(
        format="{created:<f} {levelname:>5s} {name}.{funcName:>8s} |{message}|",
        level=logging.DEBUG,
        style="{",
    )

    a = TestClassA()
    a.testmethod1()

Outputs (in case you are curious)

1688494741.449282 DEBUG TestClassA.testmethod1 |debug message from test class A|

What's a good way of making data from a class available to all classes/objects? It wouldn't be static, it'd be combined from a JSON file and any command line parameters.

If I copied the example above but changed it to a ConfigMixin, would that work? With the logging example, each class creates its own logger object when it first calls self.log.debug, so that might not work because each object needs to get the same config data.

Is there a pattern or other design that could help? How do you make configuration data available to your whole app? Do you have a config object that can get/set values and saves to disk, etc?

Thank you for reading, my apologies for poorly worded questions.