Python Coding challenge - Day 1285| What is the output of the following Python Code?

 

Code Explanation:

Heading 1: Defining the Class

class A:

Defines a class named A. This class will create objects that store a value in the attribute x.

3. Heading 2: The Constructor — __init__()

def __init__(self, x):    self.x = x

- __init__() initializes an object when it is created.

- self refers to the current object.

- x receives the value passed during object creation.

- self.x = x stores that value as an instance attribute.

For example, A(10) creates an object whose x value is 10.

4. Heading 3: Operator Overloading — __add__()

def __add__(self, other):    return A(self.x - other.x)

- __add__() defines what happens when the + operator is used between two A objects.

- self refers to the left-hand object.

- other refers to the right-hand object.

- self.x - other.x subtracts their stored values.

- A(...) creates and returns a new object containing the subtraction result.

Important trick: Although the code uses +, the method performs subtraction (-).

5. Heading 4: Creating the First Object

a = A(10)

Creates an object named a with:

a.x = 10

6. Heading 5: Creating the Second Object

b = A(4)

Creates another object named b with:

b.x = 4

7. Heading 6: Adding the Objects

c = a + b

Python internally calls:

c = a.__add__(b)

The method calculates:

\[

10 - 4 = 6

\]

Then A(6) creates a new object, which is assigned to c.

Therefore:

c.x = 6

8. Heading 7: Printing the Result

print(c.x)

Accesses the x attribute of object c and displays its value, 6.

9. Final Output

6

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