Python Coding challenge - Day 654| What is the output of the following Python Code?

 

Code Explanation:

1. Importing partial

from functools import partial

You import the partial function from Python's functools module. This function allows you to fix a few arguments of a function and generate a new function with fewer parameters.

2. Defining the Original Function

def add(x, y, z):

    return x + y + z

A function add is defined which takes three arguments (x, y, and z) and returns their sum.

3. Creating a Partially Applied Function

add_to_five = partial(add, x=2, y=3)

Using partial, a new function add_to_five is created from add by fixing:

x = 2

y = 3

Now add_to_five only requires the third argument z when called.

4. Calling the Partial Function

print(add_to_five(4))

You call add_to_five(4), which supplies z = 4.

Internally, this calls:

add(2, 3, 4)

Which returns:

2 + 3 + 4 = 9

5. Final Output

9

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