# # where are you going?I am going home.
# # 输出处理后的文件，文件内容期望是：
# # going you are where?home going am I.
import string
s = "where are you going!I am going home."
start = 0
end = 0
length = len(s)
# s2 = s.split()
# print("s2:",s2)
result = ""
for i in range(len(s)):
#print(s[i])
if s[i] in string.punctuation:
end = i
result += " ".join(s[start:end].split()[::-1])
# s[i]标点符号
result += s[i]
start = end + 1
if end != length - 1:
end = length
result += " ".join(s[start:end].split()[::-1])
print(result)
going you are where!home going am I.
原文：https://www.cnblogs.com/testerren/p/14054980.html