Exploring String in Python : 9 Simple Examples You Can’t Miss

def string_statistics(input_string):
    # Initialize counters for different character types
    upper_case_count = 0
    lower_case_count = 0
    digit_count = 0
    space_count = 0
    delimiter_count = 0

    # Define a set of delimiters (you can customize this set)
    delimiters = set(".,!?;:()[]{}<>\"'`~")

    # Iterate through each character in the input string
    for char in input_string:
        if char.isupper():
            upper_case_count += 1
        elif char.islower():
            lower_case_count += 1
        elif char.isdigit():
            digit_count += 1
        elif char.isspace():
            space_count += 1
        elif char in delimiters:
            delimiter_count += 1

    # Return the statistics
    statistics = {
        "Upper Case": upper_case_count,
        "Lower Case": lower_case_count,
        "Digits": digit_count,
        "Spaces": space_count,
        "Delimiters": delimiter_count
    }
    
    return statistics

# Get user input
input_text = input("Enter a text string: ")

# Calculate and display statistics
stats = string_statistics(input_text)

print("\nString Statistics:")
for category, count in stats.items():
    print(f"{category}: {count}")

Output:

Enter a text string: "Codejunction Pro 2023"
String Statistics:
Upper Case: 2
Lower Case: 13
Digits: 4
Spaces: 2
Delimiters: 2

def is_palindrome(input_string):
    # Remove spaces and convert the input string to lowercase for comparison
    clean_string = input_string.replace(" ", "").lower()
    
    # Compare the cleaned string with its reverse to check for palindromes
    if clean_string == clean_string[::-1]:
        return True
    else:
        return False

# Get user input
user_input = input("Enter a string to check for palindrome: ")

# Check if the input string is a palindrome
if is_palindrome(user_input):
    print(f'"{user_input}" is a palindrome!')
else:
    print(f'"{user_input}" is not a palindrome.')

Output:

Enter a string to check for palindrome: radar
"radar" is a palindrome!

Enter a string to check for palindrome: radix
"radix" is not a palindrome.

def alternate_uppercase(input_string):
    # Initialize an empty string to store the result
    result = ""
    
    # Iterate through the characters of the input string
    for index, char in enumerate(input_string):
        # Check if the current character is at an even index (0-based)
        if index % 2 == 0:
            # If it's at an even index, convert it to uppercase and add it to the result
            result += char.upper()
        else:
            # If it's at an odd index, add it to the result as it is (in its original case)
            result += char

    return result

# Get user input
user_input = input("Enter a string: ")

# Call the function to print alternate characters in uppercase
result = alternate_uppercase(user_input)

# Display the result
print(f"Alternate characters in uppercase: {result}")

Output:

Enter a string: Codejunction
Alternate characters in uppercase: CoDeJuNcTiOn

def count_vowels(input_string):
    # Define a set of vowels in both uppercase and lowercase
    vowels = set("AEIOUaeiou")
    
    # Initialize a counter for counting vowels
    vowel_count = 0
    
    # Iterate through the characters of the input string
    for char in input_string:
        if char in vowels:
            # If the character is in the set of vowels, increment the vowel count
            vowel_count += 1

    return vowel_count

# Get user input
user_input = input("Enter a string: ")

# Call the function to count vowels in the input string
result = count_vowels(user_input)

# Display the result
print(f"Number of vowels in the string: {result}")

Output:

Enter a string: Codejunction Pro
Number of vowels in the string: 6

import string

def remove_punctuation(input_string):
    # Define a set of punctuation characters using string.punctuation
    punctuation_set = set(string.punctuation)
    
    # Initialize an empty string to store the result
    result = ""
    
    # Iterate through the characters of the input string
    for char in input_string:
        if char not in punctuation_set:
            # If the character is not in the set of punctuation characters, add it to the result
            result += char

    return result

# Get user input
user_input = input("Enter a string: ")

# Call the function to remove punctuation from the input string
result = remove_punctuation(user_input)

# Display the result
print(f"String without punctuation: {result}")

Output:

Enter a string: "He said, 'password' is A!b@c#_%%"
String without punctuation: He said password is Abc

def sort_names(name_list):
    # Use the sorted() function to sort the names alphabetically
    sorted_names = sorted(name_list)
    return sorted_names

# Get user input for names
num_names = int(input("How many names do you want to sort? "))
names = []

for i in range(num_names):
    name = input(f"Enter name {i + 1}: ")
    names.append(name)

# Call the function to sort the names
sorted_names = sort_names(names)

# Display the sorted names
print("Sorted Names:")
for name in sorted_names:
    print(name)

Output:

How many names do you want to sort? 6
Enter name 1: Jim
Enter name 2: John
Enter name 3: Scott
Enter name 4: Anil
Enter name 5: Bob
Enter name 6: Vinod
Sorted Names:
Anil
Bob
Jim
John
Scott
Vinod

def reverse_words_in_sentence(sentence):
    # Split the sentence into words using whitespace as the delimiter
    words = sentence.split()
    
    # Reverse the list of words
    reversed_words = list(reversed(words))
    
    # Join the reversed words to form a new sentence
    reversed_sentence = ' '.join(reversed_words)
    
    return reversed_sentence

# Get user input for the sentence
user_input = input("Enter a sentence: ")

# Call the function to reverse the words in the sentence
reversed_sentence = reverse_words_in_sentence(user_input)

# Display the reversed sentence
print("Reversed Sentence:")
print(reversed_sentence)

Output:

Enter a sentence: Python is OOP Language
Reversed Sentence:
Language OOP is Python

def sum_of_digits(input_string):
    # Initialize a variable to store the sum of digits
    digit_sum = 0
    
    # Iterate through the characters in the input string
    for char in input_string:
        if char.isdigit():
            # If the character is a digit, convert it to an integer and add it to the sum
            digit_sum += int(char)

    return digit_sum

# Get user input
user_input = input("Enter a string: ")

# Call the function to calculate the sum of digits in the input string
result = sum_of_digits(user_input)

# Display the result
print(f"Sum of digits in the string: {result}")

Output:

Enter a string: Hello123World
Sum of digits in the string: 6

st = input("Enter a String:")

for i in range(0, len(st)):
    print(st[i:], end="")
    print(st[0:i])

Output:

Enter a String:hello
hello
elloh
llohe
lohel
ohell