Wednesday 1 May 2024

Python Coding challenge - Day 191 | What is the output of the following Python Code?

 

Code:

class MyClass:

    def __init__(self, x):

        self.x = x

p1 = MyClass(1)

p2 = MyClass(2)

p1.x = p2.x

del p2.x

print(p1.x)

Solution with Explanation:

let's break down the code step by step:

class MyClass:: This line defines a new class named MyClass. Classes are used to create new objects that bundle data (attributes) and functions (methods) together.
def __init__(self, x):: This is a special method called the constructor or initializer method. It's automatically called when a new instance of the class is created. In this case, it takes two parameters: self (which refers to the instance being created) and x (a value that initializes the x attribute of the instance).
self.x = x: Within the constructor, self.x refers to an attribute of the instance, and x is the value passed to the constructor. This line assigns the value of x passed to the constructor to the x attribute of the instance.
p1 = MyClass(1): This line creates a new instance of the MyClass class and assigns it to the variable p1. The value 1 is passed to the constructor, so p1.x will be set to 1.
p2 = MyClass(2): Similarly, this line creates another instance of the MyClass class and assigns it to the variable p2. The value 2 is passed to the constructor, so p2.x will be set to 2.
p1.x = p2.x: This line sets the value of the x attribute of p1 to be the same as the value of the x attribute of p2. After this line, both p1.x and p2.x will be 2, because p2.x is 2.
del p2.x: This line deletes the x attribute from the p2 instance. After this line, p2.x will raise an AttributeError because x no longer exists as an attribute of p2.
print(p1.x): Finally, this line prints the value of p1.x. Since p1.x was set to p2.x, which was 2 before it got deleted, the output will be 2.
So, the output of this code will be:

2


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