MoreAboutStrings.py

# This program concatenates strings.

def main():
    name = 'Carmen'
    print('The name is', name)
    name = name + ' Brown'
    print('Now the name is', name)

# Call the main function.
main()



# This program counts the number of times
# the letter T (uppercase or lowercase)
# appears in a string.

def main():
    # Create a variable to use to hold the count.
    # The variable must start with 0.
    count = 0
    
    # Get a string from the user.
    my_string = input('Enter a sentence: ')

    # Count the Ts.
    for ch in my_string:
        if ch == 'T' or ch  == 't':
            count += 1

    # Print the result.
    print('The letter T appears', count, 'times.')

# Call the main function.
main()



# This program gets the user's first name, last name, and
# student ID number. Using this data it generates a
# system login name.

import login

def main():
    # Get the user's first name, last name, and ID number.
    first = input('Enter your first name: ')
    last = input('Enter your last name: ')
    idnumber = input('Enter your student ID number: ')

    # Get the login name.
    print('Your system login name is:')
    print(login.get_login_name(first, last, idnumber))
    
# Call the main function.
main()



def main():
    # Create a string with a date.
    date_string = '11/26/2012'

    # Split the date.
    date_list = date_string.split('/')

    # Display each piece of the date.
    print('Month:', date_list[0])
    print('Day:', date_list[1])
    print('Year:', date_list[2])

# Call the main function.
main()


# This program demonstrates the split method.

def main():
   # Create a string with multiple words.
   my_string = 'One two three four'

   # Split the string.
   word_list = my_string.split()

   # Print the list of words.
   print(word_list)

# Call the main function.
main()


# This program demonstrates several string testing methods.

def main():
    # Get a string from the user.
    user_string = input('Enter a string: ')

    print('This is what I found about that string:')
    
    # Test the string.
    if user_string.isalnum():
        print('The string is alphanumeric.')
    if user_string.isdigit():
        print('The string contains only digits.')
    if user_string.isalpha():
        print('The string contains only alphabetic characters.')
    if user_string.isspace():
        print('The string contains only whitespace characters.')
    if user_string.islower():
        print('The letters in the string are all lowercase.')
    if user_string.isupper():
        print('The letters in the string are all uppercase.')

# Call the main function.
main();