Python Coding challenge - Day 589| What is the output of the following Python Code?

 

Code Explanation:

1. Defining the Decorator-Like Function plus1

def plus1(f):

    def wrap(x): return f(x) + 1

    return wrap

plus1 is a function that takes another function f as an argument.

Inside it, wrap(x) is defined:

It calls f(x) and then adds 1 to the result.

plus1 returns wrap, which is a modified version of the original function.

Think of plus1 as a function enhancer that adds 1 to whatever the original function returns.

2. Creating a Function with a Lambda

f = plus1(lambda x: x * 3)

A lambda function (lambda x: x * 3) is created.

This lambda multiplies the input x by 3.

plus1 wraps it, creating a new function wrap(x) that returns:

(x * 3) + 1

3. Calling the Final Function

print(f(2))

Now let's compute:

lambda x: x * 3 → with x = 2 → 2 * 3 = 6

plus1 adds 1 → 6 + 1 = 7

Final Output

7

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