Dictionary practice question step by step

 

🧪 Small Practice Exercises (Try These!)

1. Create a dictionary with "brand": "Nike", "price": 1200, "color": "Red"

2. Print the price from the dictionary.

3. Add a new key "size": "M"

4. Update the price to 1300

5. Delete the key "color"

Ans1:

dic1 = {"brand": "Nike", "price": 1200, "color": "Red"}

dic1["size"] = "M"

dic1["price"] = 13000

del dic1["color"]

print(dic1)

🧪 Practice Time

Try these and share your answers if you’d like me to review them

1. car = {"brand": "Toyota", "model": "Corolla", "year": 2022}

2.  Print both key and value in one line.
3.  Check if "model" exists as a key.
4.  Check if "BMW" exists as a value.
5.  Loop through the values and print them.
6.  Loop through the keys and print them.

car = {"brand": "Toyota", "model": "Corolla", "year": 2022}

##Loop through the keys and print them.

for key in car:

    print (f"Key : {key}")

# output :

# Key : brand

# Key : model

# Key : year

#Loop through the values and print them.

for value in car.values():

    print ("Values",value)

# values Toyota

# values Corolla

# values 2022

#Print both key and value in one line.

for key,value in car.items():

    print (f"{key} : {value}")

#Output:

# brand : Toyota

# model : Corolla

# year : 2022

#Check if "model" exists as a key.

if "model" in car:

    print("Yes model is exists")

#Check if "BMW" exists as a value.

if "BMW" in car.values():

    print("Yes BMW is exists")

else:

    print(f"No")

Step 2: Accessing Nested Data

students = {

    "student1": {"name": "Alice", "age": 20},

    "student2": {"name": "Bob", "age": 22}

}

print(students["student1"]["name"])

print(students["student2"]["name"])

🔹 Step 3: Looping Through Nested Dictionaries

students = {

    "student1": {"name": "Alice", "age": 20},

    "student2": {"name": "Bob", "age": 22}

}

# print(students["student1"]["name"])

# print(students["student2"]["name"])

for ids , info in students.items():

    print(f"{ids} info :")

    for key,value in info.items():

        print(f"{key} ':' {value} ")

#Output:

student1 info : name ':' Alice age ':' 20 student2 info : name ':' Bob age ':' 22