Python Palindrome程序无法正常工作 [英] Python palindrome program not working
本文介绍了Python Palindrome程序无法正常工作的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我用python写了一个简单的程序,检查句子是否是回文.但是我不知道为什么它不起作用.结果始终为False.有人知道怎么了吗?
I've written a simple program in python which checks if the sentence is palindrome. But I can't figure out why isn't it working. The results is always False. Does anyone knows what's wrong?
def isPalindrome(word):
# Removes all spaces, and lowercase the word.
word = word.strip().lower()
word = word.replace(" ", "")
# If the length of the word is less than 1, means its a palindrome
if (len(word) <= 1):
return True
# Compares the first and the last character of the word.
# If it is the same, calls the function again with the same word,
# without its first and last characters. If its not the same, its
# not palindrome
else:
if word[0] == word[-1]:
isPalindrome(word[1:-1])
else:
return False
sentence = input("Enter a sentence: \n")
if (isPalindrome(sentence)):
print("The sentence %s is palindrome." % sentence)
else:
print("The sentence %s is NOT palindrome" % sentence)
推荐答案
您没有返回函数的结果.
You aren't returning the result of the function.
替换:
if word[0] == word[-1]:
isPalindrome(word[1:-1])
使用
if word[0] == word[-1]:
return isPalindrome(word[1:-1])
这篇关于Python Palindrome程序无法正常工作的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文