The different string methods

". len ( )

The string method '. len ( )' counts the amount of characters which you assign it to for example typing: print len (first_name) would count the amount of characters which is in the variable 'first name'.

. upper ( )

The string method '.upper( ) ' will print any string in upper case for example if you type: 'print first_name.upper ( ) it will print the characters assigned to first_name in upper case.

. lower ( )

The string method '.lower( )' will print any string in lower case for example if you type: 'print first_name.lower ( ) it will print the characters assigned to first_name in lower case.