Python Coding challenge - Day 960| What is the output of the following Python Code?

 

Code Explanation:

1. Defining Class A

class A:

    def f(self): return "A"

A class A is defined.

It has a method f() that returns "A".

2. Defining Class B

class B:

    def f(self): return "B"

A class B is defined.

It also has a method f() but returns "B".

3. Defining Class C Inheriting from A

class C(A): pass

C initially inherits from A.

So normally:

C().f() → "A"

4. Changing the Base Class at Runtime

C.__bases__ = (B,)

This dynamically changes the inheritance of class C.

Now C no longer inherits from A, but from B.

So the new hierarchy is:

C → B → object

5. Calling f() on a C Object

print(C().f())

Step-by-step:

C() creates an instance of C.

f() is searched:

Not found in C

Found in B (new base class)

B.f() is called → returns "B".

6. Final Output

B

Final Answer

✔ Output:

B

900 Days Python Coding Challenges with Explanation