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<h1>Source code for nltk.chat</h1><div class="highlight"><pre>
<span></span><span class="c1"># Natural Language Toolkit: Chatbots</span>
<span class="c1">#</span>
<span class="c1"># Copyright (C) 2001-2021 NLTK Project</span>
<span class="c1"># Authors: Steven Bird <stevenbird1@gmail.com></span>
<span class="c1"># URL: <http://nltk.org/></span>
<span class="c1"># For license information, see LICENSE.TXT</span>
<span class="c1"># Based on an Eliza implementation by Joe Strout <joe@strout.net>,</span>
<span class="c1"># Jeff Epler <jepler@inetnebr.com> and Jez Higgins <jez@jezuk.co.uk>.</span>
<span class="sd">"""</span>
<span class="sd">A class for simple chatbots. These perform simple pattern matching on sentences</span>
<span class="sd">typed by users, and respond with automatically generated sentences.</span>
<span class="sd">These chatbots may not work using the windows command line or the</span>
<span class="sd">windows IDLE GUI.</span>
<span class="sd">"""</span>
<span class="kn">from</span> <span class="nn">nltk.chat.eliza</span> <span class="kn">import</span> <span class="n">eliza_chat</span>
<span class="kn">from</span> <span class="nn">nltk.chat.iesha</span> <span class="kn">import</span> <span class="n">iesha_chat</span>
<span class="kn">from</span> <span class="nn">nltk.chat.rude</span> <span class="kn">import</span> <span class="n">rude_chat</span>
<span class="kn">from</span> <span class="nn">nltk.chat.suntsu</span> <span class="kn">import</span> <span class="n">suntsu_chat</span>
<span class="kn">from</span> <span class="nn">nltk.chat.util</span> <span class="kn">import</span> <span class="n">Chat</span>
<span class="kn">from</span> <span class="nn">nltk.chat.zen</span> <span class="kn">import</span> <span class="n">zen_chat</span>
<span class="n">bots</span> <span class="o">=</span> <span class="p">[</span>
<span class="p">(</span><span class="n">eliza_chat</span><span class="p">,</span> <span class="s2">"Eliza (psycho-babble)"</span><span class="p">),</span>
<span class="p">(</span><span class="n">iesha_chat</span><span class="p">,</span> <span class="s2">"Iesha (teen anime junky)"</span><span class="p">),</span>
<span class="p">(</span><span class="n">rude_chat</span><span class="p">,</span> <span class="s2">"Rude (abusive bot)"</span><span class="p">),</span>
<span class="p">(</span><span class="n">suntsu_chat</span><span class="p">,</span> <span class="s2">"Suntsu (Chinese sayings)"</span><span class="p">),</span>
<span class="p">(</span><span class="n">zen_chat</span><span class="p">,</span> <span class="s2">"Zen (gems of wisdom)"</span><span class="p">),</span>
<span class="p">]</span>
<div class="viewcode-block" id="chatbots"><a class="viewcode-back" href="../../api/nltk.chat.html#nltk.chat.chatbots">[docs]</a><span class="k">def</span> <span class="nf">chatbots</span><span class="p">():</span>
<span class="kn">import</span> <span class="nn">sys</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">"Which chatbot would you like to talk to?"</span><span class="p">)</span>
<span class="n">botcount</span> <span class="o">=</span> <span class="nb">len</span><span class="p">(</span><span class="n">bots</span><span class="p">)</span>
<span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="n">botcount</span><span class="p">):</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">" </span><span class="si">%d</span><span class="s2">: </span><span class="si">%s</span><span class="s2">"</span> <span class="o">%</span> <span class="p">(</span><span class="n">i</span> <span class="o">+</span> <span class="mi">1</span><span class="p">,</span> <span class="n">bots</span><span class="p">[</span><span class="n">i</span><span class="p">][</span><span class="mi">1</span><span class="p">]))</span>
<span class="k">while</span> <span class="kc">True</span><span class="p">:</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">"</span><span class="se">\n</span><span class="s2">Enter a number in the range 1-</span><span class="si">%d</span><span class="s2">: "</span> <span class="o">%</span> <span class="n">botcount</span><span class="p">,</span> <span class="n">end</span><span class="o">=</span><span class="s2">" "</span><span class="p">)</span>
<span class="n">choice</span> <span class="o">=</span> <span class="n">sys</span><span class="o">.</span><span class="n">stdin</span><span class="o">.</span><span class="n">readline</span><span class="p">()</span><span class="o">.</span><span class="n">strip</span><span class="p">()</span>
<span class="k">if</span> <span class="n">choice</span><span class="o">.</span><span class="n">isdigit</span><span class="p">()</span> <span class="ow">and</span> <span class="p">(</span><span class="nb">int</span><span class="p">(</span><span class="n">choice</span><span class="p">)</span> <span class="o">-</span> <span class="mi">1</span><span class="p">)</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="n">botcount</span><span class="p">):</span>
<span class="k">break</span>
<span class="k">else</span><span class="p">:</span>
<span class="nb">print</span><span class="p">(</span><span class="s2">" Error: bad chatbot number"</span><span class="p">)</span>
<span class="n">chatbot</span> <span class="o">=</span> <span class="n">bots</span><span class="p">[</span><span class="nb">int</span><span class="p">(</span><span class="n">choice</span><span class="p">)</span> <span class="o">-</span> <span class="mi">1</span><span class="p">][</span><span class="mi">0</span><span class="p">]</span>
<span class="n">chatbot</span><span class="p">()</span></div>
</pre></div>
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