Dictionaries — Chapter Test

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Question 1

How do you access a value in a dictionary?

ABy its index number

BBy its key

CBy its position

DBy slicing

Question 2

Which can NOT be used as a dictionary key?

AA string

BA number

CA tuple

DA list

Question 3

What does d.get("x") return if the key 'x' is not in the dictionary?

AAn error

BNone

DAn empty string

Question 4

Which method is best for looping over both keys and values together?

Akeys()

Bvalues()

Citems()

Dclear()

Question 5

Are dictionaries mutable?

ANo, like tuples

BYes — you can add, change and remove pairs

COnly the keys are mutable

DOnly if you use update()