map实现删除给定字符串中的小写字母
def del_lowerletters(s): if s>='a' and s<='z': return " " else: return s print("".join(map(del_lowerletters,"ahfAADDVCGHhgjggg")))
(map(del_lowerletters,"ahfAADDVCGHhgjggg") 中map本身是把"ahfAADDVCGHhgjggg"中的每一个字母做为参数传递到 del_lowerletters(s)函数中去