如何让这个代码告诉我单词在句子中的位置

Question

varSentence = ("The fat cat sat on the mat")

print (varSentence)

varWord = input("Enter word ")

varSplit = varSentence.split()

if varWord in varSplit:
    print ("Found word")
else:
    print ("Word not found")
    for (num, x) in enumerate(sentence):
    if word == x:
        print ("Your word is in position",num,"!")

Answer 1

不需要循环，使用list.index，由try/except块保护，以防找不到字符串。list.index返回单词的第一次出现。你知道吗

sent = 'ASK NOT WHAT YOUR COUNTRY CAN DO FOR YOU ASK WHAT YOU CAN DO FOR YOUR COUNTRY.'
words = sent.split()
word = "WHAT"

try:
    print(words.index(word)+1)
except ValueError:
    print("{} is not in the sentence".format(word))

返回3，因为index在第三个位置找到了单词（数组从0开始）