isdigit()returns true when string contains only digits (numbers and not lettersislower()returns true when string has at least one alphabetic character and all alphabetic characters are in lowercase isnumeric()returns true when unicode string contains only numeric characters isspace()returns true when string contains only whitespace characters (which includes spacestabscarriage returnslinefeedsform feedsand vertical tabsbut not the backspaceistitle()returns true when string is cased for use as titlesuch as hello world howeverthe function requires that even little words have the title case for examplefollow star returns falseeven though it' properly casedbut follow star returns true isupper()returns true when string has at least one alphabetic character and all alphabetic characters are in uppercase join(seq)creates string in which the base string is separated in turn by each character in seq in repetitive fashion for exampleif you start with mystring "helloand type print(mystring join("!*!"))the output is !hello*hellolen(string)obtains the length of string ljust(widthfillchar=")left justifies string so that it fits within the number of spaces specified by width if you supply character for fillcharthe function uses that character otherwiseljust(uses spaces to create string of the desired width lower()converts all uppercase letters in string to lowercase letters lstrip()removes all leading whitespace characters in string max(str)returns the character that has the maximum numeric value in str for examplea would have larger numeric value than min(str)returns the character that has the minimum numeric value in str for examplea would have smaller numeric value than rjust(widthfillchar=")right justifies string so that it fits within the number of spaces specified by width if you supply character for fillcharthe function uses that character otherwiserjust(uses spaces to create string of the desired width rstrip()removes all trailing whitespace characters in string split(str="num=string count(str))splits string into substrings using the delimiter specified by str (when suppliedthe default is to use space as delimiter consequentlyif your string contains fine daythe output would be three substrings consisting of afineand day you use num to define the number of substrings to return the default is to return every substring that the function can produce