Python Design Patterns - Object Oriented

The object oriented pattern is the most commonly used pattern. This pattern can be found in almost every programming language.

How to implement the object oriented pattern?

Let us now see how to implement the object oriented pattern.

class Parrot:
   # class attribute
   species = "bird"
	
   # instance attribute
   def __init__(self, name, age):
      self.name = name
      self.age = age
		
# instantiate the Parrot class
blu = Parrot("Blu", 10)
woo = Parrot("Woo", 15)

# access the class attributes
print("Blu is a {}".format(blu.__class__.species))
print("Woo is also a {}".format(woo.__class__.species))

# access the instance attributes
print("{} is {} years old".format( blu.name, blu.age))
print("{} is {} years old".format( woo.name, woo.age))

Output

The above program generates the following output

Explanation

The code includes class attribute and instance attributes, which are printed as per the requirement of the output. There are various features that form part of the object oriented pattern. The features are explained in the next chapter.