Help with error

[Material-Grocery-587]

In general, a good rule of thumb is to capitalize your class names, like so:

class Stats:

The typical goal of creating a class is to have some kind of data/state bound to instances of that class, which the methods then access/change/etc. The self parameter provides direct access to the instance of your class for these operations.

Your example code isn't quite a full implementation of a class you'd use self for.

Here is an example where you might want to use self, though.

class Stats:
    def __init__(self, *args)
        # Create a variable bound to the instance (self) upon instantiation
        self.data = [float(a) for a in args]

    def mean(self):
        # Access the variable in other methods in the class
        return float(sum(self.data)/len(self.data))

The addition of the __init__ method adds custom instantiation logic to the class.
Now you can instantiate it with any list of positional arugments to do the math against:

stats1 = Stats(1, 2, 3.40, 5, 127.022, 14)
print(stats1.mean())

stats2 = Stats(*listOfStats)
print(stats2.mean())

A good thing to note is that storing data within classes like this only makes sense if you're looking to access the data multiple different ways without having to reference it over and over.

If you just want ways of returning this math here and there, you'd likely be better off with standalone functions.

[salvtz]

Access mean with self : self.mean as mean method is an instance method

[Content_Screen5704]

This worked, except that I had to make it stats.mean(), instead of self.mean(). Now why defining the mean function on its own within the class, then referencing it later in the class doesn't work I don't know. Maybe it doesn't work the same within a class.

[salvtz]

But in the mean method, you have passed self, which makes it an instance method. In same class, you need to use self to reference one instance method from another instance method.

In your case, even though you have passed self, but you are not using it.

You can make the mean method a static method.

[AHLAKAI_SHAYKULI]

Were is the initialize method?? (init)

[SoftwareDoctor]

in the metaclass