Mastering Python Dictionaries Quiz

Which of the following is the correct way to create an empty dictionary in Python?

• empty_dict = []

• empty_dict = {}

• empty_dict = ()

• empty_dict = set()

Given the dictionary student = {"name": "Alice", "age": 18}, how would you access the value associated with the key "name"?

• student["name"]

• student.name

• student{"name"}

• student

How can you add a new key-value pair "grade": "A" to the dictionary student = {"name": "Alice", "age": 18}?

• student.add("grade", "A")

• student["grade"] = "A"

• student.create({"grade": "A"})

• student + "grade":"A"

What will be the output of the following code?
student = {"name": "Alice", "age": 18}
print(student["grade"])

• None

• "A"

• KeyError

• 0

What will be the result of the following code? ```python student = {"name": "Alice", "age": 18} student["age"] = 19 print(student) ```

• `{"name": "Alice", "age": 18}`

• `{"name": "Alice", "age": 19}`

• `{"name": "Alice", "age": 18, "age": 19}`

• `Error`

What will be the output of the following code? ```python student = {"name": "Alice", "age": 18} for key, value in student.items(): print(key, value) ```

• `name Alice age 18`

• `("name", "Alice") ("age", 18)`

• `name: Alice, age: 18`

• `name Alice \n age 18`

How can you get a list of all values in a dictionary `student = {"name": "Alice", "age": 18}`?

• `student.values()`

• `list(student)`

• `student.keys()`

• `student.items()`

What will be the result of the following code? ```python student = {"name": "Alice", "age": 18} student.clear() print(student) ```

• `{}`

• `{"name": "Alice", "age": 18}`

• `None`

• `Error`

Which of the following is a valid way to merge two dictionaries `dict1` and `dict2` in Python 3.9+?

• `dict1 + dict2`

• `dict1.update(dict2)`

• `dict1 | dict2`

• `dict1 & dict2`

What will be the output of the following code? ```python student = {"name": "Alice", "age": 18} age = student.pop("age") print(age) ```

• `18`

• `None`

• `Error`

• `{"name": "Alice"}`