CC103 - Part 2

What is the output of: d = {'a': 1, 'b': 2} print(d['c'])

• None

• 0

• Error

• []

Which method returns a list of key-value tuple pairs?

• keys()

• values()

• items()

• get()

How to safely access a key that may not exist in a dictionary?

• dict['key']

• dict.get('key')

• dict.key

• dict.fetch('key')

What is the output of len({'a': 1, 'b': 2, 'a': 3})?

• 3

• 2

• 1

• Error

What does dict.update({'c': 3}) do?

• Adds key 'c' with value 3

• Replaces dictionary

• Clears dictionary

• Returns error

What will dict.pop('x') do if 'x' does not exist?

• Returns None

• Raises KeyError

• Deletes key

• Returns 0

How to loop over dictionary keys and values? for k, v in ___: ...

• dict

• dict.items()

• dict.keys()

• dict.values()

Can a dictionary key be a list?

• Yes

• No

• Only if list is empty

• Only in Python 3

What is the output of: d = dict([('a', 1), ('b', 2)]) print(d)

• ['a': 1, 'b': 2]

• {('a', 1), ('b', 2)}

• {'a': 1, 'b': 2}

• Error

Which method removes all dictionary items?

• del dict

• dict.clear()

• dict.remove_all()

• dict.pop()