Code.py

from abc import ABC, abstractmethod

class MotorCycle(ABC):
    wheels = 2
    def __init__(self, model=None, price=None, ownerName =None):
        self.model = model
        self._price = price
        self.__ownerName = ownerName

    def get_Owner_Name(self):
        return self.__ownerName
    
    @abstractmethod
    def show_color(self):
        pass

class SportsBike(MotorCycle):
    def __init__(self, model, price, topSpeed, ownerName, color):
        super().__init__(model, price, ownerName)
        self.topSpeed = topSpeed
        self.color = color
    
    def show_details(self):
        print('Model ', self.model)
        print('price', self._price)
        print('Topspeed ', self.topSpeed)
        # print('Owner name', self.ownerName)

    def show_color(self):
        print("Color of this bike is ", self.color)
        
    

lst = "ABCD"
n = len(lst)
for i in range(0, n+1):
    for j in (i, n/2):
        print(" "  , end="")
    print(lst[0:i])
    # for j in range(0, i):
    #     print(lst[j])