''' Purpose: consider string casing functions
'''

text = input( "Enter text: " )

print()

print( "text:", text )

print()

# produce case variants of input text
text_c = text.capitalize()
text_l = text.lower()
text_u = text.upper()

print( "text.lower():", text_l, "       # all lower case" )
print( "text.upper():", text_u, "       # all upper case" )
print( "text.capitalize():", text_c, "  # initial character capitalized, rest lower case" )
print()
# WRITE THIS DOWN: STRINGS ARE IMMUTABLE (cannot change the original string -> these functions
# hand back a VERSION of the string with the function applied in it which is why we store them in
# variables!)
# variable = s.function() ex. text_c = text.capitalize()

# THREE NEW FUNCTIONS FOR STRINGS (DOES NOT CHANGE s)
    # s.capitalize()
        # Capitalizes the first character of a string and makes everything else lowercase
        # s = 'naDIa'
        # s.capitalize() -> 'Nadia'
    # s.lower()
        # Makes all the characters lowercase
        # s = 'COHOON'
        # s.lower() -> 'cohoon'
    # s.upper()
        # Makes all the characters uppercase
        # s = 'ann'
        # s.upper() -> 'ANN'
# STORE THE FUNCTION CALLS IN ANOTHER VARIABLE! ^^
    # Ex. capitalized_name = s.capitalize() -> 'Nadia'
    # s retains the original value!