CLASSES AND OBJECTS TASKS

1.Create a person class. Include attributes like name, country and date of birth.
Implement a method to determine the person’s age.
#Code :

from datetime import date
class person:
    def getdata(self):
        dt=date.today()
        self.name=input("Enter Your Name : ").capitalize()
        dob_in=input("Enter Your DOB (yyyy-mm-dd) : ")
        self.dob=date.fromisoformat(dob_in)
        self.country=input("Enter Your Country : ").capitalize()
        self.age=dt.year-self.dob.year - ((dt.month,dt.day)<(self.dob.month,self.dob.day))
    def display(self):
        print(f"Name : {self.name}")
        print(f"DOB : {self.dob.strftime("%d-%m-%Y")}")
        print(f"Age : {self.age}")
        print(f"Country : {self.country}")
p=person()
p.getdata()
print("*************************************")
p.display()

2. Create a class representing a Circle. Include methods to calculate its area and
perimeter.
#Code :

class circle:

    def area(self,r):

        return 3.14*r*r

    def peri(self,r):

        return 2*3.14*r

c=circle()

r=int(input("Enter the Radius : "))

print("CIRCLE")

print("Area : ",c.area(r))

print(f"Perimeter : {c.peri(r) : .2f}")

3. Write a Python program to create a class representing a bank. Include methods for managing customer accounts and transactions.

#Code :

from datetime import date

import random as r

class bank:

    

    def __init__(self):

        self.ac=r.sample(range(10000000,100000000), 1)

        self.ifsc="BOT02580"

        self.branch="Udumalpet"

        self.balance=0

        self.trans={ "Deposit" : 0,"Withdraw" : 0}

        self.t1,self.t2=[],[]

    

    def customer(self):

        print("****************************************")

        print("\tCUSTOMER ACCOUNT")

        print("****************************************")

        self.name=input("Enter the Customer Name : ").upper()

        self.occup=input("Enter the Occupation : ").capitalize()

        self.dob=date.fromisoformat(input("Enter the DOB [yyyy-mm-dd] : "))

        self.add=input("Enter the Address : ").strip().split(',')

        

    def deposit(self):

        print("****************************************")

        print("\tDEPOSITION PROCESS")

        print("****************************************")

        t=int(input("Enter the Deposit Amount : "))

        self.balance+=t

        self.t1.append(t)

        self.trans["Deposit"]=self.t1

    def withdraw(self):

        print("****************************************")

        print("\tWITHDRAWAL PROCESS")

        print("****************************************")

        t=int(input("Enter the Withdrawal Amount : "))

        if t>self.balance:

            print("\t**INSUFFICIENT BALANCE")

        else:

            self.balance-=t

            self.t2.append(t)

            self.trans["Withdraw"]=self.t2

    def transaction(self):

        print("****************************************")

        print("\tTRANSACTION HISTORY")

        print("****************************************")

        ch=input("Which details you want to know ? Deposit/Withdraw : ").capitalize()

        if self.trans[ch]!=0:

            print(f"Your {ch} History")

            print("---------------------------")

            for i in self.trans[ch]:

                print(i)

        else:

            print(f"{ch} history is empty ")

    def account(self):

        print("****************************************")

        print("\tACCOUNT DETAILS")

        print("****************************************")

        print(f"A/C No : {self.ac}")

        print(f"Holder Name : {self.name}")

        print(f"DOB : {self.dob}")

        print(f"Address : {self.add}")

        print(f"Occupation : {self.occup}")

        print(f"IFSC Code : {self.ifsc}")

        print(f"Branch : {self.branch}")

        print(f"Balance : {self.balance}")

c1=bank()

print("****************************************")

print("\tBANK OF TAMILNADU")

print("****************************************")

print("Welcomes You !\n")

while True:

    c=int(input("\t*MENU*\n1.NEW ACCOUNT\n2.DEPOSIT\n3.WITHDRAW\n4.TRANSACTION\n5.YOUR ACCOUNT\n6.EXIT\nEnter your choice : "))

    match c:

        case 1:

            c1.customer()

        case 2:

            c1.deposit()

        case 3:

            c1.withdraw()

        case 4:

            c1.transaction()

        case 5:

            c1.account()

        case 6:

            exit(0)

            print("\tTHANK YOU")

        case _:

            print("INVALID OPTION : TRY AGAIN")

4. Write a Python program to create a class representing a shopping cart.
Include methods for adding and removing items, and calculating the total price.
#Code :

class shopping_cart:

    def __init__(self):

        self.cus_items,self.brands,self.cat=[],[],[]

        self.accessories={

            "Electronic":{

                "Tv" : {

                    "Panasonic":25000,

                    "Redmi": 30000,

                    "Philips" : 20000

                    },

                "Refrigerator":{

                    "Whirlpool" : 35000,

                    "Lg" : 40000,

                    "Haier" : 50000

                    },

                "Speaker" : {

                    "Sony" : 16000,

                    "JBL" : 20000,

                    "TBL" : 12000

                    }

                },

            "Cosmetics":{

                "Skin" : {

                    "Facewash" : 3000,

                    "Sunscreen" : 2500,

                    "moisturizer" : 2000

                    },

                "Hair" : {

                    "Shampoo" : 3500,

                    "Conditioner" : 3000,

                    "Serum" : 2000

                    },

                "Makeup" : {

                    "Eyeliner" : 1500,

                    "Lipstick" : 1000,

                    "Nailpolish" : 1200

                    }

                },

            "Smart" : {

                "Watch" : {

                    "Noise" : 1500,

                    "Zora" : 1000,

                    "Boat" : 2000

                    },

                "Assistant" : {

                    "Google" : 10000,

                    "Alexa" : 5500,

                    "Mi" : 4000

                    },

                "Lock" : {

                    "Denler" : 20000,

                    "Lg" : 14500,

                    "Zemote" : 33000

                    }

                }

            }

    def add_items(self):

        print("**************************************")

        print("\tCATEGORIES")

        print("**************************************")

        for category in self.accessories:

            print(category)

        self.ch=input("Choose Your Category : ").capitalize()

        print("\n**************************************")

        print(f"\t{self.ch.upper()} BRANDS")

        print("**************************************")

        for brand in self.accessories[self.ch]:

                print(brand)

        self.brand=input("Choose Your Brand : ").capitalize()

        print("\n**************************************")

        print(f"\t{self.brand.upper()} PRODUCTS")

        print("**************************************")

        for product in self.accessories[self.ch][self.brand]:

                print(product)

        self.product=input("Choose Your Product : ").capitalize()

        print("**************************************")

        print(f"Price of {self.product} : {self.accessories[self.ch][self.brand][self.product]}")

        cart=input("Do You Want to Add to Cart : Y/N ? ").upper()

        if cart=='Y':

            self.cat.append(self.ch)

            self.brands.append(self.brand)

            self.cus_items.append(self.product)

            print("\n\t*SUCCESSFULLY ADDED TO CART*")

    def remove_items(self):

        if len(self.cus_items)==0 :

            print("*Your cart is empty*")

        else:

            print("**************************************")

            print("\tYOUR CART ITEMS")

            print("**************************************")

            for i in self.cus_items:

                print(i)

            self.product=input("Enter the Product to remove from Cart : ").capitalize()

            t=self.cus_items.index(self.product)

            self.cat.pop(t)

            self.brands.pop(t)

            self.cus_items.pop(t)

            print("\n\t*ITEM REMOVED SUCCESSFULLY*")

    def display(self):

        tot=0

        print("\n**************************************")

        print("\tMY CART")

        print("**************************************")

        if len(self.cus_items)==0 :

            print("*Your cart is empty*")

        else:

            print("\nItem\tPrice")

            print("----------------------")

            for i in self.cus_items:

                t=self.cus_items.index(i)

                print(f"{i}\t{self.accessories[self.cat[t]][self.brands[t]][i]}")

                tot+=self.accessories[self.cat[t]][self.brands[t]][i]

            print("----------------------")

            print(f"      Total :  {tot}")

            print("----------------------")

        

#Main_Code

try:

    print("*************************************************")

    print("\tWELCOME TO RAHUL MART")

    print("*************************************************")

    s=shopping_cart()

    while True:

        d=int(input("\n\t*MENU*\n**************************************\n1.ADD ITEM TO CART\n2.REMOVE ITEM FROM CART\n3.YOUR CART ITEMS\n4.EXIT\nEnter Your Choice : "))

        match d:

            case 1:

                s.add_items()

            case 2 :

                s.remove_items()

            case 3:

                s.display()

            case 4:

                exit(0)

                print("\t***THANK YOU FOR CHOOSING OUR SERVICE***")

            case _:

                print("\t*Invalid Choice : Try Again*")

except:

    print("ERROR FOUND : 403")

5. Write a Python program to create a calculator class. Include methods for
basic arithmetic operations.
#Code :

class calculator:
    def add(self,a,b):
        return a+b
    def sub(self,a,b):
        return a-b
    def mul(self,a,b):
        return a*b
    def div(self,a,b):
        return a/b
    def mod(self,a,b):
        return a%b
cal=calculator()
while True:
    n1=int(input("Enter Value 1 : "))
    n2=int(input("Enter Value 2 : "))
    print(f"\nValue 1 : {n1}\nValue 2 : {n2}")
    ch=int(input("\n\tMENU\n1.ADDITION\n2.SUBTRACTION\n3.MULTIPLICATION\n4.DIVISION\n5.MODILUS\n6.EXIT\n\nEnter Your Choice : "))
    match ch:
        case 1:
            print(f"Addition : {cal.add(n1,n2)}\n")
        case 2:
            print(f"Subtraction : {cal.sub(n1,n2)}\n")
        case 3:
            print(f"Multiplication : {cal.mul(n1,n2)}\n")
        case 4:
            print(f"Division : {cal.div(n1,n2)}\n")
        case 5:
            print(f"Modulus : {cal.mod(n1,n2)}\n")
        case 6:
            exit(0)
        case _:
            print("Invalid Choice : Try Again")

6. Write a Python program to create a class that represents a shape. Include
methods to calculate its area and perimeter. Implement subclasses for different
shapes like circle, triangle, and square.
#Code :

from abc import abstractmethod

class shapes:

    @abstractmethod

    def area(self):

        pass

    

    @abstractmethod

    def peri(self):

        pass

    

    def display(self,area,peri):

        print(f"Area : {area}")

        print(f"Perimeter : {peri : .2f}")

class circle(shapes):

    def getdata(self):

        self.r=int(input("Enter the Radius : "))

    def area(self):

        return 3.14*self.r*self.r

    def peri(self):

        return 2*3.14*self.r

class triangle(shapes):

    def getdata(self):

        self.h=int(input("Enter the Height : "))

        self.b=int(input("Enter the Breath : "))

        self.s1=int(input("Enter the Side 1 : "))

        self.s2=int(input("Enter the Side 2 : "))

    def area(self):

        return 0.5*self.h*self.b

    def peri(self):

        return self.s1+self.s2+self.b

class square(shapes):

    def getdata(self):

        self.a=int(input("Enter the Side : "))

    def area(self):

        return self.a*self.a

    def peri(self):

        return 4*self.a

#Main Code

c=circle()

t=triangle()

s=square()

for o in c,t,s:

    name=type(o).__name__.upper()

    print(name)

    print("************************************")

    o.getdata()

    o.display(o.area(),o.peri())

    print("************************************")

7. Write a Python program to create a class representing a bank. Include
methods for managing customer accounts and transactions.
#Code :

from datetime import date

import random as r

class bank:

    

    def __init__(self):

        self.ac=r.sample(range(10000000,100000000), 1)

        self.ifsc="BOT02580"

        self.branch="Udumalpet"

        self.balance=0

        self.trans={ "Deposit" : 0,"Withdraw" : 0}

        self.t1,self.t2=[],[]

    

    def customer(self):

        print("****************************************")

        print("\tCUSTOMER ACCOUNT")

        print("****************************************")

        self.name=input("Enter the Customer Name : ").upper()

        self.occup=input("Enter the Occupation : ").capitalize()

        self.dob=date.fromisoformat(input("Enter the DOB [yyyy-mm-dd] : "))

        self.add=input("Enter the Address : ").strip().split(',')

        

    def deposit(self):

        print("****************************************")

        print("\tDEPOSITION PROCESS")

        print("****************************************")

        t=int(input("Enter the Deposit Amount : "))

        self.balance+=t

        self.t1.append(t)

        self.trans["Deposit"]=self.t1

    def withdraw(self):

        print("****************************************")

        print("\tWITHDRAWAL PROCESS")

        print("****************************************")

        t=int(input("Enter the Withdrawal Amount : "))

        if t>self.balance:

            print("\t**INSUFFICIENT BALANCE")

        else:

            self.balance-=t

            self.t2.append(t)

            self.trans["Withdraw"]=self.t2

    def transaction(self):

        print("****************************************")

        print("\tTRANSACTION HISTORY")

        print("****************************************")

        ch=input("Which details you want to know ? Deposit/Withdraw : ").capitalize()

        if self.trans[ch]!=0:

            print(f"Your {ch} History")

            print("---------------------------")

            for i in self.trans[ch]:

                print(i)

        else:

            print(f"{ch} history is empty ")

    def account(self):

        print("****************************************")

        print("\tACCOUNT DETAILS")

        print("****************************************")

        print(f"A/C No : {self.ac}")

        print(f"Holder Name : {self.name}")

        print(f"DOB : {self.dob}")

        print(f"Address : {self.add}")

        print(f"Occupation : {self.occup}")

        print(f"IFSC Code : {self.ifsc}")

        print(f"Branch : {self.branch}")

        print(f"Balance : {self.balance}")

c1=bank()

print("****************************************")

print("\tBANK OF TAMILNADU")

print("****************************************")

print("Welcomes You !\n")

while True:

    c=int(input("\t*MENU*\n1.NEW ACCOUNT\n2.DEPOSIT\n3.WITHDRAW\n4.TRANSACTION\n5.YOUR ACCOUNT\n6.EXIT\nEnter your choice : "))

    match c:

        case 1:

            c1.customer()

        case 2:

            c1.deposit()

        case 3:

            c1.withdraw()

        case 4:

            c1.transaction()

        case 5:

            c1.account()

        case 6:

            exit(0)

            print("\tTHANK YOU")

        case _:

            print("INVALID OPTION : TRY AGAIN")

8. Create a Vehicle class with max_speed and mileage instance attributes.
#Code :

class vehicle:

    def __init__(self):

        self.model=input("Enter the Car Model : ")

        self.maxspeed=int(input("Enter the Max Speed : "))

        self.miles=int(input("Enter the Mileage : "))

        print("********************************************")

    def show(self):

        print(f" Car Model : {self.model}")

        print(f"Max Speed : {self.maxspeed}")

        print(f"Mileage : {self.miles}")

        print("********************************************")

print("********************************************")

print("\tVEHICLE RECORD")

print("********************************************")

c1=vehicle()

c2=vehicle()

c3=vehicle()

print("********************************************")

c1.show()

c2.show()

c3.show()

        

9. Create Student Class
#Code :

class student:

    def getdata(self):

        self.name=input("Enter the Name : ").capitalize()

        self.cls=input("Enter the Class (Roman) : ").upper()

        self.rno=input("Enter the Roll No : ")

        self.fn=input("Enter the Father's Name : ").capitalize()

        self.mob=input("Enter Father's Mobile No : ")

        self.foccupy=input("Enter Father's Occupation : ").capitalize()

        self.door=input("Enter Door No : ")

        self.town=input("Enter Town : ").capitalize()

        self.pin=input("Enter the Pincode : ")

    def show(self):

        print("***********************************************")

        print("\tSTUDENT DETAILS")

        print("***********************************************")

        print(f"Name                : {self.name}")

        print(f"Class                 : {self.cls}")

        print(f"Roll No             : {self.rno}")

        print(f"Father's Name : {self.fn}")

        print(f"Mobile              : {self.mob}")

        print(f"Occupation      : {self.foccupy}")

        print(f"Door No           : {self.door}")

        print(f"Town                : {self.town}")

        print(f"Pincode            : {self.pin}")

        

s=student()

s.getdata()

s.show()

10. Create Student Class with Constructor and Destructor
#Code :

class student:

    def __init__(self):

        self.name=input("Enter the Name : ").capitalize()

        self.cls=input("Enter the Class (Roman) : ").upper()

        self.fn=input("Enter the Father's Name : ").capitalize()

        self.mob=input("Enter Father's Mobile No : ")

        self.foccupy=input("Enter Father's Occupation : ").capitalize()

        self.door=input("Enter Door No : ")

        self.town=input("Enter Town : ").capitalize()

        self.pin=input("Enter the Pincode : ")

    def show(self):

        print("***********************************************")

        print("\tSTUDENT DETAILS")

        print("***********************************************")

        print(f"Name                : {self.name}")

        print(f"Class                 : {self.cls}")

        print(f"Father's Name : {self.fn}")

        print(f"Mobile              : {self.mob}")

        print(f"Occupation      : {self.foccupy}")

        print(f"Door No           : {self.door}")

        print(f"Town                : {self.town}")

        print(f"Pincode            : {self.pin}")

    def __del__(self):

        print("Objects are destoryed Successfully")

        

s=student()

s.show()

del s

11. Implement interface using class
#Code :

from abc import abstractmethod

class shapes:

    @abstractmethod

    def area(self):

        pass

    

    @abstractmethod

    def peri(self):

        pass

    

    def display(self,area,peri):

        print(f"Area : {area}")

        print(f"Perimeter : {peri : .2f}")

class circle(shapes):

    def getdata(self):

        self.r=int(input("Enter the Radius : "))

    def area(self):

        return 3.14*self.r*self.r

    def peri(self):

        return 2*3.14*self.r

class triangle(shapes):

    def getdata(self):

        self.h=int(input("Enter the Height : "))

        self.b=int(input("Enter the Breath : "))

        self.s1=int(input("Enter the Side 1 : "))

        self.s2=int(input("Enter the Side 2 : "))

    def area(self):

        return 0.5*self.h*self.b

    def peri(self):

        return self.s1+self.s2+self.b

class square(shapes):

    def getdata(self):

        self.a=int(input("Enter the Side : "))

    def area(self):

        return self.a*self.a

    def peri(self):

        return 4*self.a

class rectangle(shapes):

    def getdata(self):

        self.h=int(input("Enter the Height : "))

        self.b=int(input("Enter the Breath : "))

    def area(self):

        return self.b*self.h

    def peri(self):

        return (2*self.b)*(2*self.h)

    

#Main Code

c=circle()

t=triangle()

s=square()

r=rectangle()

for o in c,t,s,r:

    name=type(o).__name__.upper()

    print(name)

    print("************************************")

    o.getdata()

    o.display(o.area(),o.peri())

    print("************************************")

12. program to inheritance with two child (derived) classes in Python
#Code :

from abc import abstractmethod

class s3d:

    @abstractmethod

    def area(self,n):

        pass

    def show(self,area):

        print(f"Area : {area}")

class cube(s3d):

    def area(self,n):

        return 6*n*n

class sphere(s3d):

    def area(self,n):

        return 4*3.14*n*n

s=sphere()

c=cube()

n=int(input("Enter the Radius : "))

for i in s,c:

    print(type(i).__name__)

    i.show(i.area(n))

13. Multiple inheritance in python
#Code :

class student:

    def getdata(self):

        self.name=input("Enter the Name : ").capitalize()

        self.cls=input("Enter the Class (Roman) : ").upper()

        self.rno=input("Enter the Roll No : ")

        self.fn=input("Enter the Father's Name : ").capitalize()

        self.mob=input("Enter Father's Mobile No : ")

        self.foccupy=input("Enter Father's Occupation : ").capitalize()

        self.door=input("Enter Door No : ")

        self.town=input("Enter Town : ").capitalize()

        self.pin=input("Enter the Pincode : ")

class marks:

    def mark(self):

        self.m=[]

        self.tot,self.avg=0,0

        print("Enter the Marks :")

        for i in range(5):

            temp=int(input(""))

            self.m.append(temp)

            self.tot+=temp

        for i in self.m:

            if i<35:

                self.res="Fail"

                break

            else:

                self.res="Pass"

        self.avg=self.tot/5

class result(student,marks):

    def show(self):

        print("***********************************************")

        print("\tSTUDENT DETAILS")

        print("***********************************************")

        print("PERSONAL DETAILS")

        print(f"Name                : {self.name}")

        print(f"Class                 : {self.cls}")

        print(f"Roll No             : {self.rno}")

        print(f"Father's Name : {self.fn}")

        print(f"Mobile              : {self.mob}")

        print(f"Occupation      : {self.foccupy}")

        print(f"Door No           : {self.door}")

        print(f"Town                : {self.town}")

        print(f"Pincode            : {self.pin}")

        print("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~")

        print("MARK DETAILS")

        print("Subject Marks :")

        for i in self.m:

            print(i)

        print(f"Total                 : {self.tot}")

        print(f"Average            : {self.avg}")

        print(f"Result               : {self.res}")

s=result()

s.getdata()

s.mark()

s.show()

14. python program to check prime number using object oriented approach
#Code :

class Prime:

    def find_prime(self,n):

        prime_no=[]

        if n<2:

            print("Prime Number doesn't exist")

        for num in range(2,n+1):

            is_prime="True"

            for i in range(2,int(num/2)+1):  

                if num%i==0:

                    is_prime="False"

                    break

            if is_prime=="True":

                prime_no.append(num)

        return prime_no

p=Prime()

n=int(input("Enter the Range : "))

num=p.find_prime(n)

print(f"Prime Number in the Range {n} are,")

for i in num:

    print(i)

15. python program to count number of objects created
#Code :

class base:

    count=0

    def __init__(self):

        base.count+=1

o1=base()

o2=base()

o3=base()

print(f"No.of.Objects of the Class : {base.count}")

16. python program to Multilevel inheritance
#Code :

class student:

    def getdata(self):

        self.name=input("Enter the Name : ").capitalize()

        self.cls=input("Enter the Class (Roman) : ").upper()

        self.rno=input("Enter the Roll No : ")

        self.fn=input("Enter the Father's Name : ").capitalize()

        self.mob=input("Enter Father's Mobile No : ")

        self.foccupy=input("Enter Father's Occupation : ").capitalize()

        self.door=input("Enter Door No : ")

        self.town=input("Enter Town : ").capitalize()

        self.pin=input("Enter the Pincode : ")

class marks(student):

    def mark(self):

        self.m=[]

        self.tot,self.avg=0,0

        print("Enter the Marks :")

        for i in range(5):

            temp=int(input(""))

            self.m.append(temp)

            self.tot+=temp

        for i in self.m:

            if i<35:

                self.res="Fail"

                break

            else:

                self.res="Pass"

        self.avg=self.tot/5

class result(marks):

    def show(self):

        print("***********************************************")

        print("\tSTUDENT DETAILS")

        print("***********************************************")

        print("PERSONAL DETAILS")

        print(f"Name                : {self.name}")

        print(f"Class                 : {self.cls}")

        print(f"Roll No             : {self.rno}")

        print(f"Father's Name : {self.fn}")

        print(f"Mobile              : {self.mob}")

        print(f"Occupation      : {self.foccupy}")

        print(f"Door No           : {self.door}")

        print(f"Town                : {self.town}")

        print(f"Pincode            : {self.pin}")

        print("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~")

        print("MARK DETAILS")

        print("Subject Marks :")

        for i in self.m:

            print(i)

        print(f"Total                 : {self.tot}")

        print(f"Average            : {self.avg}")

        print(f"Result               : {self.res}")

s=result()

s.getdata()

s.mark()

s.show()

17. Student height record program for a school in Python
#Code :

class student:

    def height(self):

        self.name=input("Enter the Name : ").capitalize()

        self.cls=input("Enter the Class (Roman) : ").upper()

        self.rno=input("Enter the Roll No : ")

        self.weight=int(input("Enter the Weight (kg): "))

        self.h=int(input("Enter the Height (cm) : "))

    def show(self):

        print("***********************************************")

        print("\tSTUDENT DETAILS")

        print("***********************************************")

        print(f"Name            : {self.name}")

        print(f"Class              : {self.cls}")

        print(f"Roll No          : {self.rno}")

        print(f"Weight (KG) : {self.weight}")

        print(f"Height (CM) : {self.h}")

s=student()

s.height()

s.show()

18. python program to manage a phone store (mobile shop) record using class
#Code :

class mobile:

    def __init__(self):

        self.m,self.mod=[],[]

        self.mob={

            "REDMI" : {

                "9A" : {

                    "PRICE" : 12500,

                    "STOCK" : 4

                    },

                "9PRIME" : {

                    "PRICE" : 11000,

                    "STOCK" : 3

                    },

                "13" : {

                    "PRICE" : 14000,

                    "STOCK" : 5

                    }

                },

            "SAMSUNG" : {

                "M01" : {

                    "PRICE" : 9500,

                    "STOCK" : 3

                    },

                "M31" : {

                    "PRICE" : 14000,

                    "STOCK" : 7

                    },

                "M02" : {

                    "PRICE" : 8500,

                    "STOCK" : 5

                    }

                },

            "IPHONE" : {

                "11" : {

                    "PRICE" : 44000,

                    "STOCK" : 5

                    },

                "12" : {

                    "PRICE" : 49999,

                    "STOCK" : 6

                    },

                "15" : {

                    "PRICE" : 69499,

                    "STOCK" : 2

                    }

                }

            }

    def sales(self):

        print("\tOUR MOBILE STOCKS")

        for i in self.mob.keys():

            print(i)

        self.mobile=input("Enter the Mobile : ").upper()

        for i in self.mob[self.mobile].keys():

            print(i)

        self.model=input("Enter the Mobile Model : ").upper()

        

        for i in self.mob[self.mobile][self.model]:

            print(f"{i} : {self.mob[self.mobile][self.model][i]}")

        d=input("Do the customer wanna buy this : Y/N ? : ").lower()

        if d=='y':

            self.m.append(self.mobile)

            self.mod.append(self.model)

            self.mob[self.mobile][self.model]["STOCK"]=self.mob[self.mobile][self.model]["STOCK"]-1

    def billing(self,name):

        tot=0

        if len(self.mod)==0:

            print("Empty bill appeared")

            break

        else:

            print("***********************************************")

            print("\tRAHUL MOBILE WORLD")

            print("***********************************************")

            print(f"Customer : {name}")

            print("***********************************************")

            print("Mobile\tModel\tPrice")

            for i in self.mod:

                t=self.mod.index(i)

                print(f"{self.m[t]}\t{i}\t{self.mob[self.m[t]][i]["PRICE"]}")

            tot+=self.mob[self.m[t]][i]["PRICE"]

            print("------------------------------------------------------------")

            print(f"\tTotal : {tot}")

            print("***********************************************")

            print("\t*THANK YOU VISIT AGAIN*")

        

m=mobile()

print("*********************************************************")

print("\tWELCOME TO RAHUL MOBILE WORLD")

print("*********************************************************")

try:

    while True:

        c=int(input("\n\t*MENU*\n1.MOBILES\n2.BILLING\n3.EXIT\nEnter Your Choice : "))

        match c:

            case 1:

                m.sales()

            case 2:

                name=input("Enter the Customer Name : ").upper()

                aadhar=int(input("Enter the Aadhar Number : "))

                m.billing(name)

            case 3:

                exit(0)

                print("***********************************************")

                print("\t*THANK YOU VISIT AGAIN*")

            case _:

                print("\tPLEASE MAKE VALID CHOICES")

                

except:

    print("\tERROR OCCURRED : PLEASE CHECK YOUR CHOICE")

19. python program to find the elder person of two persons using class & object
#Code :

class person:

    def age(self):

        self.dob_yr=int(input("Enter Your DOB Year : "))

        return self.dob_yr

    def elder(self,m,n):

        if m<n:

            return "Person 1 is the Elder One"

        else:

            return "Person 2 is the Elder One"

print("*ELDER ONE FINDER*")

p=person()

p1=person()

p2=person()

print(p.elder(p1.age(),p2.age()))

20. python program to bank management system
#Code :

from datetime import date

import random as r

class bank:

    

    def __init__(self):

        self.ac=r.sample(range(10000000,100000000), 1)

        self.ifsc="MIB02580"

        self.branch="Udumalpet"

        self.balance=0

        self.add=""

        self.trans={ "Deposit" : 0,"Withdraw" : 0}

        self.t1,self.t2=[],[]

    

    def customer(self):

        print("****************************************")

        print("\tCUSTOMER ACCOUNT")

        print("****************************************")

        self.name=input("Enter the Customer Name : ").upper()

        self.occup=input("Enter the Occupation : ").capitalize()

        self.dob=date.fromisoformat(input("Enter the DOB [yyyy-mm-dd] : "))

        temp=input("Enter the Address : ").strip().split(',')

        for i in temp:

            self.add=self.add+"\n"+i

        

    def deposit(self):

        print("****************************************")

        print("\tDEPOSITION PROCESS")

        print("****************************************")

        t=int(input("Enter the Deposit Amount : "))

        self.balance+=t

        self.t1.append(t)

        self.trans["Deposit"]=self.t1

    def withdraw(self):

        print("****************************************")

        print("\tWITHDRAWAL PROCESS")

        print("****************************************")

        t=int(input("Enter the Withdrawal Amount : "))

        if t>self.balance:

            print("\t**INSUFFICIENT BALANCE")

        else:

            self.balance-=t

            self.t2.append(t)

            self.trans["Withdraw"]=self.t2

    def transaction(self):

        print("****************************************")

        print("\tTRANSACTION HISTORY")

        print("****************************************")

        ch=input("Which details you want to know ? Deposit/Withdraw : ").capitalize()

        if self.trans[ch]!=0:

            print(f"Your {ch} History")

            print("---------------------------")

            for i in self.trans[ch]:

                print(i)

        else:

            print(f"{ch} history is empty ")

    def account(self):

        print("****************************************")

        print("\tACCOUNT DETAILS")

        print("****************************************")

        print(f"A/C No           : {self.ac}")

        print(f"Holder Name : {self.name}")

        print(f"DOB                : {self.dob}")

        print(f"Address          : {self.add}")

        print(f"Occupation    : {self.occup}")

        print(f"IFSC Code      : {self.ifsc}")

        print(f"Branch           : {self.branch}")

        print(f"Balance          : {self.balance}")

        print(f"Card               : {self.card}")

    def card(self):

        print("****************************************")

        print("\tATM CARD APPLICATION")

        print("****************************************")

        card_type=input("Enter the card type : Credit | Debit ?\n").capitalize()

        if card_type=="Credit":

            print("Credit Card Details")

            print("Card Charges : 350")

            print("Intrest : 5%")

            ch=input("Do you want to apply ? : Y/N\n").upper()

            if ch=='Y':

                self.balance-=350

                self.card=card_type

                print("\t*Credit card applied successfully*")

            else:

                print("\t*Application process unsuccessful*")

        else:

            print("Debit Card Details")

            print("Card Charges : 150")

            ch=input("Do you want to apply ? : Y/N\n").upper()

            if ch=='Y':

                self.balance-=150

                self.card=card_type

                print("\t*Debit card applied successfully*")

            else:

                print("\t*Application process unsuccessful*")

c1=bank()

print("****************************************")

print("\tMAARIYAMMAN INDIAN BANK")

print("****************************************")

print("Welcomes You !\n")

while True:

    print("****************************************")

    c=int(input("\t*MENU*\n1.NEW ACCOUNT\n2.DEPOSIT\n3.WITHDRAW\n4.TRANSACTION\n5.YOUR ACCOUNT\n6.ATM CARD\n7.EXIT\nEnter your choice : "))

    match c:

        case 1:

            c1.customer()

        case 2:

            c1.deposit()

        case 3:

            c1.withdraw()

        case 4:

            c1.transaction()

        case 5:

            c1.account()

        case 6:

            c1.card()

        case 7:

            exit(0)

            print("\tTHANK YOU")

        case _:

            print("INVALID OPTION : TRY AGAIN")