1
Create a Dictionary
Create a dictionary called 'student' with: - "name": "Bob" - "age": 20 - "grade": "A" Print the dictionary.
Theory
Dictionaries store data as key-value pairs.
Create a dictionary:
person = {"name": "Alice", "age": 25}
Access values by key:
print(person["name"]) # Alice
Add or change values:
person["city"] = "Moscow"
person["age"] = 26
Get all keys and values:
print(person.keys()) # dict_keys(['name', 'age', 'city'])
print(person.values()) # dict_values(['Alice', 26, 'Moscow'])
Check if key exists:
if "name" in person:
print("Has name!")
Exercises in this lesson
2
Access Dictionary Values
Given dictionary: car = {"brand": "Toyota", "year": 2020, "color": "red"} Print only the brand and year on separate lines.
3
Add to Dictionary
Start with: book = {"title": "Python"} Add two new keys: - "author": "John" - "pages": 300 Print the updated dictionary.
4
Loop Through Dictionary
Given: scores = {"Math": 90, "English": 85, "Science": 95} Print each subject and score in format: "Math: 90" "English: 85" "Science: 95"