Question

Consider the following dictionaries, D and D1:
D = { "Suman": 40, "Raj": 55, "Raman": 60 }
D1 = { "Aditi": 30, "Amit": 90, "Raj": 20 }

(Answer using built-in Python functions only)

(i)
(a) Write a statement to display/return the value corresponding to the key "Raj" in the dictionary D.

OR

(b) Write a statement to display the length of the dictionary D1.

(ii)
(a) Write a statement to append all the key-value pairs of the dictionary D to the dictionary D1.

OR

(b) Write a statement to delete the item with the given key "Amit" from the dictionary D1.

Hint:

Use update() to merge dictionaries,
pop() to remove an item, len() to find size,
and square brackets [] to access values by key.

Answer 1

(i) (a) Retrieve the value associated with the key "Raj":
print(D["Raj"])
This command accesses and prints the value for the key "Raj".
OR
(i) (b) Determine the number of elements in D1:
print(len(D1))
This command uses the built-in len() function to count and display the key-value pairs in D1.
(ii) (a) Combine D into D1:
D1.update(D)
The update() method integrates all key-value pairs from D into D1. Existing keys in D1 will have their values overwritten by those from D.
OR
(ii) (b) Remove "Amit" from D1:
D1.pop("Amit")
The pop() method eliminates the entry with the key "Amit" from the dictionary D1.