字符串:git
字符串是一個有序字符的集合,用於存儲和表示基本的文本信息orm
字符串的切片:ip
a = 'red blue"字符串
a.count("e")it
>>>2form
a.count("e",2,7)集合
>>>0di
stripco
a = " alex "join
a.strip()
replace
a = " my score is 580 "
a.replace("580","630")
查:find index count
刪:字符串不可變,不能刪除
改:replace upper lower casefold swapcase strip split
格式化: format rjust ljust join
判斷: isdigital startwith endwith