Python Coding challenge - Day 935| What is the output of the following Python Code?

 Code Explanation:

1. Defining the Decorator Function

def deco(func):

deco is a decorator function.

It receives another function (func) as its argument.

Its job is to modify or extend the behavior of that function.

2. Defining the Inner Wrapper Function

    def wrapper():

        return func() + 1

wrapper is an inner function that:

Calls the original function func()

Takes its result and adds 1 to it

This is how the decorator changes the behavior of func.

So instead of returning func() directly, it returns func() + 1.

3. Returning the Wrapper

    return wrapper

deco returns the wrapper function.

This means the original function will be replaced by wrapper.

4. Decorating the Function f

@deco

def f():

    return 10

@deco means:

f = deco(f)

So the original f is passed into deco.

deco returns wrapper.

Now f actually refers to wrapper, not the original function.

5. Calling the Decorated Function

print(f())

What happens internally:

f() actually calls wrapper().

wrapper() calls the original func() (which is original f).

Original f() returns 10.

wrapper() adds 1 → 10 + 1 = 11.

print prints 11.

6. Final Output

11

Final Answer

✔ Output:

11

400 Days Python Coding Challenges with Explanation