题解 | #单词倒排#

l = ''
text = str(input())

for i in text:
    if i.isalpha() is False:
        l += ' '
    elif i.isalpha():
        l += i
        
print(' '.join(l.split()[::-1]))

把非字母的元素替换成空格，然后倒排，拼接就ok了