Python: Decorator that prevents the creation of an instance of a class

Question

Given the following python3 code:
```python
import abc, time
class MyClass(metaclass=abc.ABCMeta):
    @abc.abstractmethod
    def sleep_one(self):
         """Method that should sleep 1 second and return the object instance self"""
```

Accepted Answer

It is not possible to create an instance of MyClass because of the decorator

Accepted Answer

The purpose of this code is to invite the creation of a class inheriting from MyClass

Answer

The decorator of sleep_one should be replaced by classmethod

Answer

The decorator of sleep_one should be replaced by staticmethod

Answer

I don't know

Question from the Python test

Python: Decorator that prevents the creation of an instance of a class