Python Coding Challenge - Question with Answer (ID -280126)

 

What’s happening?

1️⃣ t is a tuple

t = (1, 2, 3)

Tuples are immutable sequences.

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2️⃣ __mul__() is the magic method for *

• t * n internally calls:

t.__mul__(n)

So this:

t * 0

and this:

t.__mul__(0)

are exactly the same.

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3️⃣ Multiplying a tuple by 0

Rule:

Any sequence × 0 → empty sequence

So:

(1, 2, 3) * 0

becomes:

()

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✅ Final Output

()

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⚠️ Important Concept (Interview Favorite)

• The tuple itself is not modified

• A new empty tuple is created

• This works for:

  • lists

  • tuples

  • strings

Example:

print("abc" * 0) # ''
print([1,2] * 0) # []

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 One-line takeaway

__mul__(0)

 returns an empty sequence of the same type

Applied NumPy From Fundamentals to High-Performance Computing