Python: Creating Dictionaries

Question 1

What is a dictionary ?

Answer 1

an unordered set of key : value pairs

Question 2

a dictionary begins and ends with what?

Answer 2

( { and } )

Question 3

each item consist of a ? and a _?__

Answer 3

key and a value

Question 4

We can have a list or a dictionary as a __?__ of an item in a dictionary, but we cannot use these data types as __?__ of the dictionary.

Answer 4

We can have a list or a dictionary as a VALUE of an item in a dictionary, but we cannot use these data types as KEYS of the dictionary.

Question 5

Write the code to create an empty dictionary called animals_in_zoo

Answer 5

animals_in_zoo = {}

Question 6

Add “zebras” to animals_in_zoo as a key with a value of 8.

Answer 6

animals_in_zoo[“zebras”] = 8

Question 7

If we wanted to add multiple key : value pairs to a dictionary at once, we can use the __?__ method

Answer 7

.update() method

Question 8

Create a dictionary called drinks_to_caffeine by using a list comprehension that goes through the zipped_drinks list and turns each pair into a key:value item.

Answer 8

drinks_to_caffeine = {key: value for key, value in zipped_drinks}

Question 9

_?__ cannot be the keys of a dictionary, because they are mutable

Answer 9

Lists cannot be the keys of a dictionary