Monday, 4 August 2025

Python Coding challenge - Day 650| What is the output of the following Python Code?

 


Code Explanation:

1. Importing partial from functools
from functools import partial
This imports the partial function.

partial is used to pre-fill some arguments of a function, creating a new version with fewer parameters.

2. Defining a Function multiply(x, y)
def multiply(x, y):
    return x * y
This is a simple function that takes two arguments x and y, and returns their product (x * y).

3. Creating a New Function with partial
double = partial(multiply, y=2)
Here, partial creates a new function called double.

It uses multiply but pre-fills the argument y=2.

So double(n) is now equivalent to multiply(n, 2) → i.e., it doubles the number.

4. Calling the double Function
print(double(5))
This calls double(5), which internally does multiply(5, 2) → result is 10.

The result 10 is printed.

Final Output
10

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