Python Coding Challenge - Question with Answer (ID -061225)

 

Step-by-Step Explanation

1️⃣ Create the list

clcoding = [1, 2, 3, 4]

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2️⃣ Apply filter

f = filter(lambda x: x % 2 == 0, clcoding)

✅ This creates a filter object (iterator) that will return only even numbers
✅ Important: filter() does NOT run immediately — it waits until you convert it to a list or loop over it.

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3️⃣ Modify the original list

clcoding.append(6)

Now the list becomes:

[1, 2, 3, 4, 6]

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4️⃣ Convert filter to list

print(list(f))

Now the filter actually runs, using the updated list.

✅ Even numbers from [1, 2, 3, 4, 6] are:

[2, 4, 6]

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✅ Final Output

[2, 4, 6]

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⭐ Key Concept (Trick)

✅ filter() is lazy — it evaluates only when needed,
✅ So it always uses the latest version of the list.

APPLICATION OF PYTHON IN FINANCE