Easy Python Dictionary Practice for Beginners

🔹 Exercise 1: Create a Dictionary

Create a dictionary named student with the following key-value pairs:

• name: "John"

• age: 20

• course: "Computer Science"

Then print the dictionary.

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🔹 Exercise 2: Access and Update Values

Using the student dictionary from Exercise 1:

• Access and print the value for the key "name".

• Change the value of "age" to 21.

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🔹 Exercise 3: Add and Remove Items

Using the same student dictionary:

• Add a new key "grade" with value "A".

• Remove the key "course" from the dictionary.

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🔹 Exercise 4: Loop Through Dictionary

Write a program to print all keys and values in the student dictionary using a for loop.

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🔹 Exercise 5: Nested Dictionary

Create a dictionary called classroom with 2 students, each having a nested dictionary:

{
  "student1": {"name": "Alice", "age": 22},
  "student2": {"name": "Bob", "age": 23}
}

Print the name of student2.

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✅ Answers

✅ Exercise 1:

student = {
    "name": "John",
    "age": 20,
    "course": "Computer Science"
}
print(student)

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✅ Exercise 2:

print(student["name"])      # Output: John
student["age"] = 21

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✅ Exercise 3:

student["grade"] = "A"
del student["course"]

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✅ Exercise 4:

for key, value in student.items():
    print(key, ":", value)

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✅ Exercise 5:

classroom = {
    "student1": {"name": "Alice", "age": 22},
    "student2": {"name": "Bob", "age": 23}
}
print(classroom["student2"]["name"])   # Output: Bob