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Python Object-Oriented Python Advanced Objects Emulating Built-ins

Confusion in code

class Inventory: def init(self): self.slots = []

def add(self, item):
    self.slots.append(item)

def __len__(self):
    return len(self.slots)

def __contains__(self, item):
    return item in self.slots

def __iter__(self):
    yield from self.slots

Where does self.slots comes from, it was not defined inside init method. any suggetion will be appreciated ?

1 Answer

Jake Kobs
Jake Kobs
9,215 Points

In the init method, since slots isn't being passed within the parameters, it's automatically being assigned to an empty list. Therefore, slots is being created in the init method.