How to use classes in Python?

Classes in Python are used to create new user-defined data structures that contain arbitrary information about something. In the case of an animal, we could create an Animal() class to track properties about the Animal like the name and age.

Here is an example on how you can define and use a simple class in python:

```

Define a class
class MyClass: x = 5

Create an object (instance of a class)
p1 = MyClass()

Use properties of the class
print(p1.x) # prints 5
```

Let’s now define a class with its constructor and some methods:

```
class Car: # Constructor def __init__(self, brand, color): self.brand = brand self.color = color

# Method def honk(self): print(f“The {self.color} {self.brand} says honk honk!”)

Create instances of the class
car1 = Car(“Toyota”, “Red”)
car2 = Car(“BMW”, “Blue”)

Calling the method for each instance
car1.honk() # The Red Toyota says honk honk!
car2.honk() # The Blue BMW says honk honk!
```

In the above example, `__init__()` is a special function which is called when a new `Car` object is created. The `self` parameter is a reference to the class instance. It is automatically passed from Python, and it is used to access variables that belong to the class.