擅长:python、mysql、java
<p>我将扩展输入数据以包含更多<code>'B' + 'I'</code>示例。在</p>
<pre><code>phrases = [('Wanna', 'O'),
('be', 'O'),
('like', 'O'),
('Alexander', 'B'),
('Coughan', 'I'),
('One', 'B'),
('Two', 'I'),
('Three', 'B')]
length = len(phrases)
res = ['%s %s' % (phrases[i][0], phrases[i + 1][0])
for i in range(length)
if i < length - 1 and phrases[i][1] == 'B' and phrases[i + 1][1] == 'I']
print(res)
</code></pre>
<p>结果是:</p>
^{pr2}$