python lab(19/10/2024)

#Count vowels, consonants and blanks
def count_vowels_consonants_blanks(string):
    vowels = 'aeiouAEIOU'
    consonants = 'bcdfghjklmnpqrstvwxyzBCDFGHJKLMNPQRSTVWXYZ'
    blanks = ' '

    vowel_count = 0
    consonant_count = 0
    blank_count = 0

    for char in string:
        if char in vowels:
            vowel_count += 1
        elif char not in consonants:
            consonant_count += 1
        elif char in blanks:
            blank_count += 1

    return vowel_count, consonant_count, blank_count

input_string = input("Enter a string: ")
vowels, consonants, blanks = count_vowels_consonants_blanks(input_string)
print("Vowels:", vowels)
print("Consonants:", consonants)
print("Blanks:", blanks)

#Output:
Enter a string: Arijit is my name
Vowels: 6
Consonants: 8
Blanks: 3

#find substring in a string
def find_substring(string, substring):
    index = string.find(substring)
    if index != -1:
        print(f"'{substring}' found at index {index} using find() method.")
    else:
        print(f"'{substring}' not found using find() method.")


input_string = input("Enter the main string: ")
input_substring = input("Enter the substring to find: ")

find_substring(input_string, input_substring)


#Output:
Enter the main string: i live in India
Enter the substring to find: India
'India' found at index 10 using find() method.


#print reverse and check palindrome
def is_palindrome(string):
    reversed_string = string[::-1]
    if string == reversed_string:
        return True, reversed_string
    else:
        return False, reversed_string

input_string = input("Enter a string: ")
check, reversed_string = is_palindrome(input_string)

print("Original string:", input_string)
print("Reversed string:", reversed_string)

if check:
    print("The string is a palindrome.")
else:
    print("The string is not a palindrome.")


#Output:
Enter a string: malayalam
Original string: malayalam
Reversed string: malayalam
The string is a palindrome.

#Print pattern
word = "INDIA"
for i in range(len(word), 0, -1):
    print(word[:i])

#Ouput:
INDIA
INDI
IND
IN
I