Python Coding Challenge - Question with Answer (ID 121126)

 

Explanation:

Step 1: Understand the Original List

[(1, 2), (3, 4), (5, 6)]

This is a list containing three tuples:

- First tuple: (1, 2)

- Second tuple: (3, 4)

- Third tuple: (5, 6)

Step 2: Understand the * Unpacking Operator

zip(*[(1, 2), (3, 4), (5, 6)])

- The * operator unpacks the list.

- It passes each tuple as a separate argument to zip().

Equivalent to:

zip((1, 2), (3, 4), (5, 6))

Step 3: Understand the zip() Function

zip((1, 2), (3, 4), (5, 6))

The zip() function groups elements according to their positions.

It produces:

(1, 3, 5)(2, 4, 6)

Step 4: Understand Tuple Assignment

a, b = zip(...)

The two resulting tuples are unpacked into two variables:

a = (1, 3, 5)b = (2, 4, 6)

Step 5: Calculate the Sum

sum(a) - sum(b)

First:

\[

sum(a) = 1 + 3 + 5 = 9

\]

Second:

\[

sum(b) = 2 + 4 + 6 = 12

\]

Now subtract:

\[

9 - 12 = -3

\]

3. Final Output

-3

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