Python Coding Challenge - Question with Answer (ID -010226)

 

List Initialization

nums = [0, 1, 2]

A list named nums is created.

It contains three elements: 0, 1, and 2.

Output List Creation

out = []

An empty list out is created.

This list will store the final result.

Loop Execution

for i in range(3):

The loop runs 3 times.

Values of i in each iteration:

First → i = 0

Second → i = 1

Third → i = 2

Filter Operation

filter(lambda x: x == i, nums)

filter() checks each element of nums.

The lambda function keeps only values where x == i.

Converting Filter to List

list(filter(...))

Converts the filtered result into a list.

Example results per iteration:

i = 0 → [0]

i = 1 → [1]

i = 2 → [2]

Extending the Output List

out += ...

+= extends the list out.

It adds elements one by one, not as a nested list.

out after each iteration:

i Added out

0 [0] [0]

1 [1] [0, 1]

2 [2] [0, 1, 2]

Final Output

print(out)

Prints the final list.

Output

[0, 1, 2]