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CBSE AISSCE 2017-2018 Marking Scheme for Computer Science
(2018-2019 Sub Code: 083 Paper Code: 91)

print self,name, self.Age
class student(person):
def __init__(self,name,age,rollno,marks):
super(student,self)._init_(self, name, age)

self.rollno=rollno
self.marks=marks
def getRoll(self):
print self.rollno, self.marks

(1 mark for mentioning the advantage, 1 mark for writing any suitable
example)

(b) class Vehicle: #Line 1 2
Type = 'Car' #Line 2
def __init__(self, name): #Line 3
self.Name = name #Line 4
def Show(self): #Line 5
print self.Name,Vehicle.Type #Line 6

V1=Vehicle("BMW") #Line 7
V1.Show() #Line 8
Vehicle.Type="Bus" #Line 9
V2=Vehicle("VOLVO") #Line 10
V2.Show() #Line 11

(i) What is the difference between the variable in Line 2 and Line 4 in the above
Python code?

Ans The variable in Line 2 is a class attribute. This belongs to the class itself.
These attributes will be shared by all the instances.
The variable in Line 4 is an instance attribute. Each instance creates a
separate copy of these variables.

(1 mark for correct difference)

(ii) Write the output of the above Python code.

Ans BMW Car
VOLVO Bus

(½ for writing each correct line of output)

(c) Define a class CONTAINER in Python with following specifications 4

Instance Attributes
- Radius,Height # Radius and Height of Container
- Type # Type of Container
- Volume # Volume of Container

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