What will be the result of following code?

>>> a = {1, 2, {3, 4}}
>>> len(a)

1. 3
2. 4
3. error

Write your answer in comment with explaination

Comments

[Mihail Malo]

Bad order of answers. "3" is ambiguous.

1. error
2. 4
3. 3

would be much better

[Lakshya Tyagi]

Correct

[ProMikeCoder2020]

A is parsed as set with three values: two integers and another set. Thus it gives a Len of 3

[Sambhav-Jindal-github]

3

[Dibyadarshan Rath]

1. 3