我该如何匹配元音? [英] How do I match vowels?

问题描述

我正在处理正在开发的较大程序的一小部分.基本上，我需要让用户输入一个单词，并且需要打印第一个元音的索引.

I am having trouble with a small component of a bigger program I am in the works on. Basically I need to have a user input a word and I need to print the index of the first vowel.

word= raw_input("Enter word: ")
vowel= "aeiouAEIOU"

for index in word:
    if index == vowel:
        print index

但是，这不起作用.怎么了?

However, this isn't working. What's wrong?

推荐答案

尝试:

word = raw_input("Enter word: ")
vowels = "aeiouAEIOU"

for index,c in enumerate(word):
    if c in vowels:
        print index
        break

for .. in将遍历字符串中的实际字符，而不是索引. enumerate将返回索引以及字符，并使引用两者更加容易.

for .. in will iterate over actual characters in a string, not indexes. enumerate will return indexes as well as characters and make referring to both easier.

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