Python Coding Challenge - Question with Answer (ID -040626)

 

Explanation:

🔹 Step 1: Import partial

from functools import partial

partial() is a utility from the functools module.

It allows you to:

Fix some arguments of a function

in advance.

Think of it as creating a new function with some arguments already filled in.

🔹 Step 2: Create Partial Function

f = partial(pow, 2)

Original function:

pow(a, b)

Meaning:

a ** b

Examples:

pow(2,3) → 8

pow(3,2) → 9

Now:

partial(pow, 2)

fixes the first argument as:

2

So Python creates a new function equivalent to:

def f(b):

    return pow(2, b)

🔹 Step 3: Execute f(5)

f(5)

Internally becomes:

pow(2, 5)

Because:

2

was already fixed by partial().

🔹 Step 4: Calculate Power

pow(2, 5)

means:

2 × 2 × 2 × 2 × 2

Result:

32

🔹 Step 5: Print Result

print(32)

Output:

32

Book: 1000 Days Python Coding Challenges with Explanation