Python Quiz for Identity Operator

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There are 20 questions based on Python Identity Operator.

Q1. What is the purpose of the is operator in Python? *

4 points

Check equality of values

Check if two variables reference the same object

Check if two objects are of the same type

Check if a value exists in a list

Q2. Which of the following is true about the is not operator? *

4 points

It checks if two objects have the same value.

It checks if two objects are not the same object.

It checks if two objects have the same type.

It checks if two variables are not equal.

Q3. What will the following code output?

x = [1, 2, 3]

y = [1, 2, 3]

print(x is y)

4 points

True

False

Error

None

Q4. Given the code below, what does z is None evaluate to?

z = None

4 points

True

False

None

Error

Q5. What is the output of the following?

a = 10

b = 10

print(a is b)

4 points

True

False

Error

None

Q6. What does is check in Python? *

4 points

Object identity

Value equality

Object type

Memory size

Q7. What will the following code output?

x = [1, 2, 3]

y = x

print(x is y)

4 points

True

False

Error

None

Q8. If a = None and b = None, what does a is b return? *

4 points

True

False

None

Error

Q9. Which operator is used to check if two variables refer to the same object? *

4 points

and

Q10. Why does x is y return False for x = [1, 2] and y = [1, 2]? *

4 points

Because the values are not equal

Because they are different objects in memory

Because the is operator cannot be used with lists

Because the lists are immutable

Q11. What does x is not y mean? *

4 points

x and y are equal in value

x and y are not the same object

x and y are of different types

x is not greater than y

Q12. Which of the following statements is true? *

4 points

is and == are interchangeable

is checks object identity, == checks value equality

is checks value equality, == checks object identity

is not and != are identical

Q13. Which of the following data types does Python cache for optimization? *

4 points

Integers between -5 and 256

Strings

Small immutable objects

All of the above

Q14. What is the output of the following?

a = True

b = True

print(a is b)

4 points

True

False

None

Error

Q15. Why does the code below output False?

a = 500

b = 500

print(a is b)

4 points

Because integers above 256 are not cached

Because is compares object identities, not values

Both a and b

Because is cannot be used with integers

Q16. Which of these is a correct statement about is and is not operators? *

4 points

is checks if two objects have the same value.

is not checks if two objects are different in memory.

is is equivalent to ==.

is not is equivalent to !=.

Q17. What will the following code output?

x = [ ]

y = [ ]

print(x is y)

4 points

True

False

Error

None

Q18. Which of the following is true about is and is not? *

4 points

is checks value equality; is not checks object type.

Both is and is not compare object identity.

is compares type, and is not compares value.

is is the opposite of is not.

Q19. Which of the following statements about is is incorrect? *

4 points

It can be used with None.

It checks if two objects are the same.

It is faster than == for checking object identity.

It always checks value equality.

Q20. What happens if you compare two variables with is and they point to the same immutable object? *

4 points

is returns True

is returns False

The code raises an error

None

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