Think Python - Denison University

10.9. Listsand strings 95>>> t = ['a', 'b', 'c', 'd', 'e', 'f']>>> del t[1:5]>>> print t['a', 'f']As usual, thesliceselects allthe elements up to,but not including, the second index.10.9 Listsand stringsA string is a sequence of characters and a list is a sequence of values, but a list of characters is notthesame as astring. To convert from astringtoalistof characters, you can uselist:>>> s = 'spam'>>> t = list(s)>>> print t['s', 'p', 'a', 'm']Becauselististhenameofabuilt-infunction,youshouldavoidusingitasavariablename. Ialsoavoidlbecause itlooks too much like1. Sothat’s why I uset.The list function breaks a string into individual letters. If you want to break a string into words,you can use thesplitmethod:>>> s = 'pining for the fjords'>>> t = s.split()>>> print t['pining', 'for', 'the', 'fjords']An optional argument called a delimiter specifies which characters to use as word boundaries. Thefollowing example uses a hyphen as adelimiter:>>> s = 'spam-spam-spam'>>> delimiter = '-'>>> s.split(delimiter)['spam', 'spam', 'spam']joinistheinverseofsplit. Ittakesalistofstringsandconcatenatestheelements. joinisastringmethod, soyou have toinvoke itonthe delimiter and pass thelistas aparameter:>>> t = ['pining', 'for', 'the', 'fjords']>>> delimiter = ' '>>> delimiter.join(t)'pining for the fjords'In this case the delimiter is a space character, so join puts a space between words. To concatenatestringswithout spaces, you can use theempty string,'', as adelimiter.10.10 Objectsand valuesIfweexecute theseassignment statements: