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Exercise 4

This is a 3-part question. Consider the following dictionary:

pets = {
    'Cat':  'Meow',
    'Dog':  'Bark',
    'Bird': 'Tweet',
}

Part 1: Write some code to print Bark by accessing the element associated with the key Dog.
Part 2: Write some code to print None when you try to print the value associated with the non-existent key, Lizard.
Part 3: Write some code to print <silence> when you try to print the value associated with the non-existent key, Lizard.

Solution

print(pets['Dog'])

print(pets.get('Lizard'))

print(pets.get('Lizard', '<silence>'))

Since the pets dictionary doesn't have a Lizard key, we need to use the dict.get method so we don't get an error. In Part 2, we don't specify a default value, so get returns None. In Part 3, we set <silence> as the default value.

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