ডিকশনারি

student = {
    "name": "Priya",
    "age": 21,
    "course": "Web Development",
}
print(student["name"])  # "Priya"

student["email"] = "priya@example.com"  # adds a new key
student["age"] = 22                       # overwrites an existing one
del student["email"]                      # removes a key

for key, value in student.items():
    print(f"{key}: {value}")
# name: Priya
# age: 21
# course: Web Development

email = student.get("email")               # None — key doesn't exist, no crash
email = student.get("email", "no email")   # "no email" — a custom fallback

students = [
    {"name": "Priya", "age": 21},
    {"name": "Amit", "age": 23},
]
print(students[0]["name"])  # "Priya"

a = {"name": "Priya", "age": 21}
b = {"age": 22, "course": "Web Development"}
a.update(b)
print(a)  # {'name': 'Priya', 'age': 22, 'course': 'Web Development'}