python lab (23/04/2024)

# Creating a dictionary with key-value pairs using dict() function taking user input

my_dict = {}
num_pairs = int(input("Enter the number of key-value pairs: "))

for i in range(num_pairs):
    key = input("Enter key {}: ".format(i+1))
    value = input("Enter value {}: ".format(i+1))
    my_dict[key] = value

print("Dictionary created:", my_dict)

#output
Enter the number of key-value pairs: 2
Enter key 1: hello
Enter value 1: 2
Enter key 2: word
Enter value 2: 2
Dictionary created: {'hello': '2', 'word': '2'}


#WAP in python to insert three elements and Pop 1 element from a Dictionary.

my_dict = {}

my_dict['apple'] = 10
my_dict['banana'] = 20
my_dict['orange'] = 30

print("Original dictionary:", my_dict)

popped_item = my_dict.popitem()

print("Popped item:", popped_item)
print("Dictionary after popping one element:", my_dict)

#output:
Original dictionary: {'apple': 10, 'banana': 20, 'orange': 30}
Popped item: ('orange', 30)
Dictionary after popping one element: {'apple': 10, 'banana': 20}


#WAP in python to find sum of all items in a Dictionary

my_dict = {'a': 10, 'b': 20, 'c': 30, 'd': 40}
total_sum = sum(my_dict.values())
print("Sum of all items in the dictionary:", total_sum)

#output:
Sum of all items in the dictionary: 100


# WAP in python update the value of a dictionary in Python if the particular key exists. If the key is not
#present in the dictionary, we will simply print that the key does not exist

my_dict = {'a': 10, 'b': 20, 'c': 30}

key_to_update = input("Enter the key to update: ")
new_value = input("Enter the new value: ")

if key_to_update in my_dict:
    my_dict[key_to_update] = new_value
else:
    print("The key does not exist")

print("Updated dictionary:", my_dict)

#output:
Enter the key to update: a
Enter the new value: 6
Updated dictionary: {'a': '6', 'b': 20, 'c': 30}


#Write a program to get the maximum and minimum value of dictionary

my_dict = {'a': 10, 'b': 20, 'c': 30, 'd': 5}

max_value = max(my_dict.values())
min_value = min(my_dict.values())

print("Maximum value in the dictionary:", max_value)
print("Minimum value in the dictionary:", min_value)


#output
Maximum value in the dictionary: 30
Minimum value in the dictionary: 5