擅长:python、mysql、java
<p>您可以使用<a href="https://docs.python.org/2/library/re.html#re.finditer" rel="nofollow">re.finditer</a>,下面是您的示例中的一个小示例:</p>
<pre><code>import re
sentence = input("Enter a set of string characters:")
keyword = input("Enter a keyword that we can tell you the position of:")
for m in re.finditer(keyword, sentence):
print('{0} found {1}-{2}'.format(keyword, m.start(), m.end()))
</code></pre>