7. Dictionaries - Data Structures

How do you create an empty dictionary to store information about a student in Python?

• student_info = []
• student_info = {}
• student_info = ()
• student_info = set()

Which method is used to get all course names (keys) in a dictionary storing course details?

• dictionary.getKeys()
• dictionary.allKeys()
• dictionary.keys()
• dictionary.retrieveKeys()

What will be the output of the following code?

• 85

• 90

• Bob

• 88

Which method is used to add a new course with its grade to an existing student dictionary?

• add()

• insert()

• append()

• update()

What is the output of the following code?

• {"Alice": 85, "Bob": 90, "Charlie": 88}

• {"Alice": 85, "Charlie": 88}

• {"Bob": 90, "Alice": 85, "Charlie": 88}

• KeyError

What will be the output of the following code?

• {"name": "Alice", "age": 30, "department": "HR"}

• {"name": "Alice", "age": 31, "department": "HR"}

• KeyError

• {"name": "Alice", "age": 30, "department": "HR", "age": 31}

What is the output of the following code?

• {"Math": 95, "English": 88, "Science": 92, "History": 85, "Geography": 90}

• {"Math": 95, "English": 88, "Science": 92, "History": 85}

• {"Math": 95, "English": 88, "Science": 92}

• Error

What is the output of the following code?

• {"Alice": 85, "Charlie": 88}

• {"Alice": 85, "Bob": 90, "Charlie": 88}

• {"Bob": 90, "Alice": 85, "Charlie": 88}

• KeyError

What will be the output of the following code?

• {"order1": 100, "order2": 150, "order3": 200}

• {"order1": 100, "order2": 150, "order3": 250}

• {"order1": 100, "order2": 200, "order3": 250}

• {"order1": 100, "order2": 150}

What is the output of the following code?

• {"username": "john_doe", "age": 28, "location": "New York"}

• {"username": "john_doe", "age": 29, "location": "New York"}

• {"username": "john_doe", "age": 28, "location": "New York", "age": 29}

• KeyError