Python Coding Challenge - Question with Answer (ID -140226)

 

Explanation:

1. Creating a List

nums = [10, 20, 30]

This line creates a list named nums.

The list contains three numbers: 10, 20, and 30.

A list is used to store multiple values in a single variable.

2. Initializing the Sum Variable

sum = 0

This line creates a variable called sum.

It is initialized with 0 because we will add numbers to it later.

This variable will store the total of all numbers in the list.

3. Starting the Loop

for i in nums:

This is a for loop.

It goes through each element in the nums list one by one.

On each loop:

i takes the value of the next number in the list

(first 10, then 20, then 30).

4. Adding Each Number to Sum

    sum += i

This line adds the current value of i to sum.

It is the same as:

sum = sum + i

Step by step:

First loop: sum = 0 + 10 = 10

Second loop: sum = 10 + 20 = 30

Third loop: sum = 30 + 30 = 60

5. Printing the Final Result

print(sum)

This line prints the final value of sum.

After the loop finishes, sum contains 60.

Output will be:

60

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