Python Day 9

What would be the output of the following code snippet? a_dict = {'color': 'blue', 'fruit': 'apple', 'pet': 'dog'} for key in a_dict: print(key)

• 'blue' 'apple' 'dog'
• color fruit pet
• blue apple dog
• color' 'fruit' 'pet'

You have the following dictionary definition: d = {'foo': 100, 'bar': 200, 'baz': 300} What method call will delete the entry whose value is 200?

• delete d('bar')
• d.pop("bar")
• d.remove("bar")
• None of the above

Dictionary keys must be immutable

• True
• False

Suppose d = {“john”:40, “peter”:45}, what happens when we try to retrieve a value using the expression d[“susan”]?

• Since “susan” is not a value in the set, Python raises a KeyError exception
• It is executed fine and no exception is raised, and it returns None
• Since “susan” is not a key in the set, Python raises a KeyError exception
• Since “susan” is not a key in the set, Python raises a syntax error

Ouput?

• None
• KeyError Exception
• -1

Which of the following statements create a dictionary?

• d = {}
• d = {“john”:40, “peter”:45}
• d = {40:”john”, 45:”peter”}
• All of the mentioned