Working with Dictionaries

student = {"name": "Alice", "age": 12, "grade": 7}
scores = {"math": 95, "english": 88, "science": 92}

student["email"] = "[email protected]"  # Add
student["age"] = 13  # Update

if "name" in student:
    print(student["name"])

for key in student:
    print(f"{key}: {student[key]}")

# Grade calculator
grades = {"math": 95, "english": 88, "science": 92}
average = sum(grades.values()) / len(grades)
print(f"Average: {average}")

# Phone directory
contacts = {
    "Alice": "555-1234",
    "Bob": "555-5678"
}