Python classes and Objects

  


Class: A class is a blueprint for defining and creating objects. A class prescribes a set of characteristics known as attributes (these are the class variables) and behaviours known as methods (these are the class functions).
Object: An object is an actual instance of a class in a running program.
__init__: It is the constructor method in Python. It is automatically called when you create a new object from a class.  It is used to initialize the attributes (properties) of the object.
self: It refers to the class instance itself. It’s a way to access the object’s attributes and methods.


# Class and objects
# Class with arguments

class Contacts:

    contact_list = []
    
    def __init__(self, name, contact_number):
        self.name = name
        self.contact_number = contact_number
       
    def show_contact_number(self):
        print(f"Contact number of {self.name}: {self.contact_number}")

    def add_contact(self):
        self.contact_list.append({"name":self.name, "contact_number": self.contact_number})

    def show_contact_list(self):
        for cnt in self.contact_list:
            print(cnt)
            print(f"{cnt.get("name")}: {cnt.get("contact_number")}")


contact_object = Contacts("Alice", "9876543210")
contact_object.add_contact()
contact_object.show_contact_number()
contact_object.show_contact_list()



# Class without arguments

class Mobile:

    def show_mobile_details(self):
        print("Brand: Samsung")
        print("Operating System: Android")
        print("RAM: 12 GB")
        print("Processor: Snapdragon")


mob = Mobile()
mob.show_mobile_details()