Question

对于学校项目，我创建了一些代码，要求用户输入一个输入，然后要求他们调用一个单词，然后打印该单词及其在列表中的位置。单个单词可以正常工作，但是在添加了2个或更多单词后，程序会继续产生错误。

sentence = raw_input("Please write a sentence: ")
while "." in sentence or "," in sentence or ":" in sentence or "?" in 
sentence or ";" in sentence:
    print("Please write another sentence without punctutation ")
    sentence = input("Please write a sentence: ")
else:
    words = sentence.split()
    print(words)
specificword = raw_input("Please type a word to find in the sentence: ")
for i in range(len(words)):
    if specificword == words[i]:
        print (specificword, "found in position ", i + 1)
    else:
        print("Word not found in the sentence")
        specificword = raw_input("Please type another word to find in the sentence")

输入多个单词后，程序仍会运行

else:
    print("Word not found in the sentence")
    specificword = raw_input("Please type another word to find in the sentence")

Answer 1

你有两个如果＆amp;在for循环块内的其他内容，因此如果它在第一次迭代时没有找到您的单词，它会立即转到if块。您可以通过缩小if块＆amp;来修复代码。向break块添加if语句。

for i in range(len(words)):
    if specificword == words[i]:
        print (specificword, "found in position ", i + 1)
        break
else:
    print("Word not found in the sentence")
    specificword = raw_input("Please type another word to find in the sentence")

代码工作正常，直到您输入多个单词

1 个答案: