Hackerrank - HackerRank Python Scalar Types and Operators Questions and Answers

Question 1

What is the output of the following Python code snippet?

x = 15
y = 4

result = x // y + (x % y)
print(result)

Accepted Answer

6

Answer

7

Answer

3.75

Answer

A TypeError occurs

Question 2

Which of the following correctly describes the `None` object in Python?

Accepted Answer

It is a keyword used to signify the absence of a value and its type is `NoneType`.

Answer

It is equivalent to an empty string `''` or the integer `0`.

Answer

It is a placeholder for variables that will be assigned a string value later.

Answer

It is a mutable object that can be changed to any other data type.

Question 3

A developer needs to ensure a function is only called if a list is not empty to avoid an `IndexError`. Which code snippet uses short-circuiting to achieve this safely?

`my_list = []`
`def process_list(data): print(data[0])`

Accepted Answer

`if my_list and process_list(my_list): pass`

Answer

`if process_list(my_list) and my_list: pass`

Answer

`if len(my_list) > 0 or process_list(my_list): pass`

Answer

`if not my_list and process_list(my_list): pass`

Question 4

What is the value of the variable `z` after this code executes?

`z = 10 + 4 * 2 ** 3 / 8 - 1`

Accepted Answer

13.0

Answer

14.0

Answer

5.0

Answer

27.0

Question 5

In Python, boolean values `True` and `False` are instances of which scalar type?

Accepted Answer

`bool`

Answer

`int`

Answer

`str`

Answer

`object`

Question 6

Given the expression `result = 5 > 3 < 4`, what is the final value of `result`?

Accepted Answer

True

Answer

False

Answer

An error is raised

Answer

1