Python Coding Challenge - Question with Answer (01311025)

 

Step 1: The list data

data is a list of lists:

[
  [1, 2],
  [3, 4]
]

So, it has two elements:

• First element → [1, 2]

• Second element → [3, 4]

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🔸 Step 2: The for loop

for x, y in data:

This line unpacks each inner list into two variables x and y.

• On first iteration → x = 1, y = 2

• On second iteration → x = 3, y = 4

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🔸 Step 3: Inside the loop

print(x + y, end=' ')

• First iteration → x + y = 1 + 2 = 3

• Second iteration → x + y = 3 + 4 = 7

end=' ' keeps the output on the same line.

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✅ Final Output:

3 7

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💡 Quick Tip:

This is called sequence unpacking — it works when each element in the list (like [1, 2]) contains exactly two items to assign to x and y.

Mathematics with Python Solving Problems and Visualizing Concepts