Python Coding Challenge - Question with Answer (ID 180926)

 

Explanation:

1. Creating the Set

x = {1, True, 1.0, 2}

A set is created with these values:

1, True, 1.0, 2

Normally, we might expect 4 elements.

But Python has a special rule here. 👀

2. True and 1 Are Equal

True == 1

Output:

True

In Python:

True → 1

False → 0

So True and 1 are considered equal when comparing set elements.

3. 1.0 Is Also Equal to 1

1.0 == 1

Output:

True

Therefore:

True == 1 == 1.0

All three represent the same set key/value for equality and hashing purposes.

4. Duplicate Values Are Removed

The set:

{1, True, 1.0, 2}

effectively contains only:

{1, 2}

So there are 2 unique elements.

5. Using len()

print(len(x))

len() counts the number of unique elements in the set.

len({1, 2}) = 2

⚡ Complete Flow

{1, True, 1.0, 2}

        ↓

True == 1

        ↓

1.0 == 1

        ↓

True, 1, 1.0 → treated as the same set element

        ↓

{1, 2}

        ↓

len(x) → 2

✅ Final Output:

2

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