Python Dictionaries Quiz

What is the correct syntax to create an empty dictionary in Python?

• `empty_dict = []`

• `empty_dict = {}`

• `empty_dict = ()`

• `empty_dict = set()`

How do you add a key-value pair to a dictionary in Python?

• `dict[key] = value`

• `dict.add(key, value)`

• `dict.append(key, value)`

• `dict.insert(key, value)`

Which method is used to remove a key-value pair from a dictionary?

• `dict.remove(key)`

• `dict.pop(key)`

• `dict.delete(key)`

• `dict.discard(key)`

How can you check if a key exists in a dictionary?

• `key in dict`

• `dict.has_key(key)`

• `dict.contains(key)`

• `key.exists(dict)`

What will `len(dict)` return when `dict = {'a': 1, 'b': 2, 'c': 3}`?

• `1`

• `2`

• `3`

• `4`

Which method returns a list of all the keys in a dictionary?

• `dict.keys()`

• `dict.values()`

• `dict.items()`

• `dict.get_keys()`

What does the `dict.get(key, default)` method do?

• Returns the value for `key` if `key` is in the dictionary, else `default`

• Removes the `key` from the dictionary

• Adds `default` to the dictionary if `key` is not found

• Updates the value of `key` to `default`

How do you merge two dictionaries `dict1` and `dict2` in Python 3.9+?

• `dict1 + dict2`

• `dict1.update(dict2)`

• `{**dict1, **dict2}`

• `dict1.merge(dict2)`

What will `dict1.update(dict2)` do?

• Return a new dictionary with combined key-value pairs

• Add key-value pairs from `dict2` to `dict1`

• Remove key-value pairs from `dict1` that are in `dict2`

• Create a list of key-value pairs from both dictionaries

Which method would you use to get a list of all the values in a dictionary?

• `dict.keys()`

• `dict.values()`

• `dict.items()`

• `dict.get_values()`