Python Coding challenge - Day 1287| What is the output of the following Python Code?

 

Code Explanation:

1. nums = [2, 3, 4, 5, 6, 7] — Creating a List

nums = [2, 3, 4, 5, 6, 7]

 Creates a list named nums.

- The list contains six integers: 2, 3, 4, 5, 6, 7.

- These numbers will be checked one by one in the comprehension.

2. result = { ... } — Creating a Set Comprehension

result = {    x % 4    for x in nums    if x % 2 == 0}

- The curly braces {} create a set comprehension in this context.

- A set stores only unique values, so duplicate results are automatically removed.

- The comprehension filters the numbers and calculates a result for each number that passes the condition.

3. for x in nums — Iterating Through the List

for x in nums

- The for loop takes each number from nums.

- The variable x represents the current number.

- The values checked are 2, 3, 4, 5, 6, 7.

4. if x % 2 == 0 — Checking Even Numbers

if x % 2 == 0

- The modulo operator % returns the remainder after division.

- If a number divided by 2 has remainder 0, it is even.

- Only even numbers are allowed into the calculation.

x x % 2 Condition

2 0 True

3 1 False

4 0 True

5 1 False

6 0 True

7 1 False

Therefore, the numbers that pass the condition are 2, 4, 6.

5. x % 4 — Calculating the Remainder

x % 4

- Calculates the remainder when each selected even number is divided by 4.

- The calculation is performed only for numbers that satisfy the condition.

x Calculation Result

2 2 % 4 2

4 4 % 4 0

6 6 % 4 2

The generated values are 2, 0, 2.

Because this is a set, the duplicate value 2 is stored only once.

So, the resulting set contains {0, 2}.

6. print(sorted(result)) — Sorting and Printing

print(sorted(result))

- sorted() arranges the set's elements in ascending order.

- It returns a list containing the sorted values.

- print() displays that list on the screen.

Final output:

[0, 2]

Books: 100 Python Programs for Beginner with explanation