Dictionaries & Key-Value Logic

What defines a dictionary?

Are dictionary keys mutable?

How to access a value for key 'k'?

Difference between D['k'] and D.get('k')?

How to add a new key-value pair?

How to remove a key 'k'?

What does D.keys() return?

What does D.values() return?

What does D.items() return?

Result of len({'a': 1, 'b': 2})?

How to merge dict D2 into D1?

Can a dictionary have duplicate keys?

Can a dictionary have duplicate values?

What is D.popitem()?

How to create a dict from two lists?

Result of 'k' in D?

Which method removes all items?

What is {x: x*x for x in range(3)}?

Is {1, 2} a dictionary?

Can a list be a dictionary key?

Can a tuple be a dictionary key?

What is D.setdefault(k, v)?

Result of dict.fromkeys(['a', 'b'], 0)?

Is dictionary order guaranteed?

How to sort a dict by value?

What is max(D) for {'a': 1, 'z': 2}?

What is the return type of D.keys()?

How to copy a dict deeply?

What is the complexity of key lookup?

Is {} == dict()?