NoEmptyInit

Correction

Here is what's right.

The following class is perfectly valid, although not useful:

class Device:
    def __init__(self):
        pass

What happens when executing an empty __init__?

Despite the above __init__ of class Device being empty, the Python interpreter will simply call this method after instantiating the object. While having an empty __init__ is useless, it is allowed in the language.

But doesn’t it have to return the object?

The method __init__ should not have an explicit return: although having a return statement in the __init__ is valid, it is not meaningful. It is just a default method that gets invoked upon object instantiation, which is usually used to set up instance variables and other operations.