Python Question / Quiz; What is the output of the following Python code, and why? Comment your answers below!
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@PythonPr Answer: B) [4, 16]
It's like ordinary loop with body:
› if x % 2 == 0 — filters for even numbers
› x ** 2 squares them and appends to list
For beginners: List comprehensions = loops in one line! So common in Python, you'll see them everywhere.
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@PythonPr Answer: (B) [4, 16] The code snippet uses a list comprehension to create a new list named result. The code iterates through the nums list, which is [1, 2, 3, 4].The if x % 2 == 0 condition filters the elements, keeping only the numbers that are even. The even
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@PythonPr Correct answer: B) [4, 16]
Because:
We are using a list comprehension (fancy name for a one-liner loop). It grabs numbers from the original list nums, but only the even ones.
So from [1, 2, 3, 4], the even numbers are 2 and 4.
Then we square them
2 ** 2 = 4 and 4 ** 2 = 16.
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@PythonPr B=[4,16]
Because it will square all the numbers i.e the x**2 command and return only even numbers i.e the command x%2==0
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@PythonPr clc; clear;
nums = [1, 2, 3, 4];
result = [];
for countNum = 1 : 1 : length(nums)
if mod(countNum, 2) == 0
result = [result, nums[countNum]^2];
end
end
disp(result);
Option B is right ans.
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