PyFoodBevOCP, Python 3

PyFoodBevOCP

#python 3.6.9

#PyFoodBevOCP: example of SOLID principle where Open-Closed principle is highlighted; two classes Food and Beverage are created; class Detail is abstract class where abstract method fdet() prints details about the instances of Food and Beverage classes;depending on the type of food and beverage corresponding subclasses of Detail is called and respective fdet(Food/Beverage) method is invoked; note that fdet() takes as argument Food or Beverage class to print the details; here subclasses of Details are extended to invoke the appropriate fdet() to fit the instances instead of modifying Details;
#this code is created by Rezaul Hoque on April 13,2022;
#contact: jewelmrh@yahoo.com; Dhaka,   Bangladesh,https://rezaulhoque.wordpress.com;https:hoquestake.blogspot.com
#note: codes shared by Rezaul Hoque on rextester are not for sale; they are created and shared to facilitate the algorithm learning process; many like Hoque use this platform to practice programming ;Rezaul hopes his contribution helps others to fine tune their learning;

from abc import ABC, abstractmethod

class Food:
    def __init__(self, food,type,price,qty):
       
        self.food= food
        self.type=type
        self.price=price
        self.qty=qty

def __repr__(self):
            return f'Food(name={self.food},type={self.type},price={self.price}, qty={self.qty})'

class Beverage:
    def __init__(self, beverage,type,price,qty):
        
        self.beverage= beverage
        self.type=type
        self.price=price
        self.qty=qty
   
   
    def __repr__(self):
        return f'Beverage(name={self.beverage},type={self.type},price={self.price}, qty={self.qty})'

class Details(ABC):
    @abstractmethod
    def fdet(self):
        pass

class BakeFood(Details):
    def fdet(self,Food):
        print(f'{Food}')

class FryFood(Details):
    def fdet(self, Food):
        print(f'{Food}')

class Drinks(Details):
    def fdet(self, Beverage):
        print(f'{Beverage}')

class TraDrinks(Details):
    def fdet(self, Beverage):
        print(f' {Beverage}')

if __name__ == '__main__':
    a = Food('Fried Hilsa','Fried Food',80,1)
    b=Food('Naan','Baked Food',12,1)
    c = Beverage('Coke','Carbonated Drink',20,1)
    d=Beverage('Lassi','Traditional Drink',40,1)
    f1=FryFood()
    f1.fdet(a)
    f2=BakeFood()
    f3=Drinks()
    f4=TraDrinks()
    f2.fdet(b)
    f3.fdet(c)
    f4.fdet(d)


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