PCAP Exam - Question 137

Question

What is the expected behavior of the following code?

Examice · Accepted Answer

C.

macxsz · Answer

C. it outputs 1

stuartz · Answer

Answer is C.  Following shows interactions of class variables vs. instance variables

>>> class Class:
...     Var = 0
...     def __init__(self):
...         self.value = 0
... 
>>> obj1 = Class()
>>> Class.Var += 2
>>> obj2 = Class()
>>> Class.Var += 2
>>> obj1.Var += 5
>>> obj2.value += 1
>>> print(obj2.Var, obj2.value, Class.Var, obj1.Var)
4 1 4 9

seaverick · Answer

#question 137
class Class:
    Variable = 0
    def __init__(self):
        self.value = 0
obj1 = Class()
Class.Variable += 1
obj2 = Class()
obj2.value += 1
print(obj2.Variable, obj2.value, Class.Variable, obj1.Variable,obj1.value)
print(obj2.Variable + obj1.value)

Tested: C

PCAP Exam - Question 137

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