Question

I am trying to use OO on python to create a nice structured class. I have an object that all functions from one class will inherit but there are sub functions (getter and setter) that may require one or two additional parameters.

How can I get this type of logic to work correctly.

class XYZ(object):
    def __init__(self, cameraId):
        self.cameraId = cameraId;
        self.index = "";

    def get_test(self):
        print "Index: " + self.index + " CameraID: " + self.cameraId;
        return self.cameraId;

    def set_test(self, value, myValue=""):
        self.cameraId = value;
        self.index = myValue;
        return True;

    TEST_XYZ = property(get_test,set_test);

Answer 1

You can use tuple-typed values. Note that you don’t have to use ; after your statements…

class XYZ(object):
    def __init__(self, cameraId):
        self.cameraId = cameraId
        self.index = ""

    def get_test(self):
        print "Index: " + self.index + " CameraID: " + self.cameraId
        return self.cameraId

    def set_test(self, value):
        # Require value to be a tuple!
        assert(isinstance(value, tuple))

        self.cameraId = value[0]

        try:
            self.index = value[1]

        except IndexError:
            self.index = ""

        return True

    TEST_XYZ = property(get_test, set_test)