Question

Which of the following is the correct way to instantiate an object belonging to the user-defined class Dog that has attributes of name and breed?

pet = Dog("Spot", "Dalmatian")

dog = new Dog(self, "Oscar", "Lab")

pet = new Dog("Fido", "puppy", "Dalmatian")

dog = Dog(self, "Buddy", "Boxer")

Answer 1

The correct way to instantiate an object belonging to the user-defined class `Dog`, assuming the class takes two attributes (name and breed), is:

```python
pet = Dog("Spot", "Dalmatian")
```

This line correctly creates an instance of the `Dog` class with "Spot" as the name and "Dalmatian" as the breed.

The other options are incorrect for the following reasons:

- `dog = new Dog(self, "Oscar", "Lab")`: In Python, we do not use the `new` keyword; that syntax is more common in other programming languages like Java.

- `pet = new Dog("Fido", "puppy", "Dalmatian")`: This option has three arguments, but the `Dog` class is supposed to take only the name and breed.

- `dog = Dog(self, "Buddy", "Boxer")`: Similar to the second option, the `self` parameter is used inside class methods to refer to the current instance; it should not be included when creating an instance of a class from outside.

Thus, the first option is the correct one.