What is the expected output of the following code? class A: def __init__(self, v=2): self.v = v def set(self, v=1): self.v += v return self.v a = A() b = a b.set() print(a.v)

class A:
    def __init__(self, v=2):
        self.v = v
 
    def set(self, v=1):
        self.v += v
        return self.v
 
 
a = A()
b = a
b.set()
print(a.v)

• 3
• 1
• 2
• 0

Explanation: Let’s analyze the code:

• The A class constructor creates an instance variable named v equal to the default value passed to the constructor’s parameter v, which is 2.
• The set method takes the v variable, and returns the value passed to it incremented by 1 (v = 2 + 1 = 3)
• The a object is created from class A.
• The b object is created: it becomes a reference to object a, and it is enriched with the set property – which updates the value held by the instance variable and shared by object a.
• The updated value assigned to the instance variable v in object a is now printed to the console.

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