strs_capitalize         Capitalize the first character of each sentence
strs_casefold           Perform case folding on strings
strs_center             Center a string in a field of a given width
strs_contains           Check if string contains a substring
strs_count              Count occurrences of a substring in a string
strs_endswith           Check if string ends with a specified suffix
strs_expandtabs         Expand tabs in a string to spaces
strs_find               Find the first occurrence of a substring in a
                        string
strs_isalnum            Check if string is alphanumeric
strs_isalpha            Check if string contains only alphabetical
                        characters
strs_isascii            Check if string contains only ascii characters
strs_isdecimal          Check if string contains only decimal
                        characters
strs_isdigit            Check if string contains only digits
strs_islower            Check if string is in lowercase
strs_isnumeric          Check if string contains only numeric
                        characters
strs_isspace            Check if string contains only whitespace
                        characters
strs_istitle            Check if string is in title case
strs_isupper            Check if string is in uppercase
strs_join               Join elements into a single string with a
                        separator
strs_ljust              Left-justify string in a field of a given width
strs_lower              Convert string to lowercase
strs_lstrip             Left strip characters from a string
strs_normalize_whitespace
                        Normalize whitespace in a string
strs_removeprefix       Remove a prefix from a string
strs_removesuffix       Remove a suffix from a string
strs_replace            Replace substring in a string
strs_rfind              Find the last occurrence of a substring in a
                        string
strs_rjust              Right-justify string in a field of a given
                        width
strs_rstrip             Right strip characters from a string
strs_slice              Slice substrings from a string
strs_split              Split string into substrings
strs_splitlines         Split string into lines
strs_startswith         Check if string starts with a specified prefix
strs_strip              Strip characters from both ends of a string
strs_swapcase           Swap uppercase and lowercase characters in a
                        string
strs_title              Convert string to title case
strs_upper              Convert string to uppercase
