擅长:python、mysql、java
<p>有些功能已被弃用。</p>
<p>所讨论的代码在nltk 2.0.4版本上确实有效</p>
<p><a href="https://pypi.python.org/pypi/nltk/2.0.4" rel="nofollow noreferrer">https://pypi.python.org/pypi/nltk/2.0.4</a></p>
<p>要安装版本2.0.4,请执行以下操作:</p>
<blockquote>
<p>wget <a href="https://pypi.python.org/packages/source/n/nltk/nltk-2.0.4.zip#md5=cbd04d8635f1358a69a38c4774be029c" rel="nofollow noreferrer">https://pypi.python.org/packages/source/n/nltk/nltk-2.0.4.zip#md5=cbd04d8635f1358a69a38c4774be029c</a></p>
<p>7z x nltk-2.0.4.zip</p>
<p>cd nltk-2.0.4/</p>
<p>python setup.py install</p>
</blockquote>
<p>要检查安装的版本,请运行以下命令:</p>
<blockquote>
<p>pip search nltk</p>
</blockquote>
<p><img src="https://i.stack.imgur.com/UFpy5.png" alt="enter image description here"/></p>