What is the result of the following code? ``python x = (3, ) print(len(x)) ``

The correct answer is C. 1. x = (3,) creates a tuple with a single element - the integer 3. The trailing comma inside the parentheses is what makes it a tuple, so len(x) returns 1, the count of its elements. Why the distractors are wrong: A (2): There's no basis for 2; the tuple contains only one item. B…

Question

What is the result of the following code?

x = (3, )
print(len(x))

Options

A2
BThe program will cause an error.
C1
D3

How the community answered

(35 responses)

A
3% (1)
B
9% (3)
C
83% (29)
D
6% (2)

Explanation

x = (3,) creates a tuple with a single element - the integer 3. The trailing comma inside the parentheses is what makes it a tuple, so len(x) returns 1, the count of its elements.

Why the distractors are wrong:

A (2): There's no basis for 2; the tuple contains only one item.
B (error): This is perfectly valid Python syntax - no error occurs.
D (3): This confuses the value of the element (3) with the count of elements (1).

Memory tip: Think of len() as counting slots, not reading values. The comma is the real tuple-maker - (3) is just a parenthesized integer, but (3,) is a one-slot tuple.

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