Python Coding challenge - Day 1153| What is the output of the following Python Code?

 

Code Explanation:

🔹 1. First List Creation

a = [1,2,3]

✅ Explanation:

A list a is created.

Elements are:

[1, 2, 3]

🔹 2. Second List Creation

b = [4,5,6]

✅ Explanation:

Another list b is created.

Elements are:

[4, 5, 6]

🔹 3. Using map()

result = map(lambda x,y: x+y, a, b)

✅ Explanation:

map() applies a function to elements of iterables.

🔹 4. Lambda Function

lambda x,y: x+y

✅ Explanation:

Anonymous function (lambda)

Takes:

x, y

Returns:

x + y

🔹 5. Pairwise Processing

map() takes values from both lists together.

🔍 Internally:

x y x+y

1 4 5

2 5 7

3 6 9

🔹 6. map() Returns Iterator

✅ Explanation:

map() does NOT directly return list.

It returns:

map object (iterator)

which generates values lazily.

🔹 7. Converting to List

print(list(result))

✅ Explanation:

list() consumes iterator

Collects all generated values into list

Final list:

[5, 7, 9]

🎯 Final Output

[5, 7, 9]

Book:  500 Days Python Coding Challenges with Explanation