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venv/lib/python3.7/site-packages/nltk/chat/__init__.py

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+# Natural Language Toolkit: Chatbots
+#
+# Copyright (C) 2001-2019 NLTK Project
+# Authors: Steven Bird <stevenbird1@gmail.com>
+# URL: <http://nltk.org/>
+# For license information, see LICENSE.TXT
+
+# Based on an Eliza implementation by Joe Strout <joe@strout.net>,
+# Jeff Epler <jepler@inetnebr.com> and Jez Higgins <jez@jezuk.co.uk>.
+
+"""
+A class for simple chatbots.  These perform simple pattern matching on sentences
+typed by users, and respond with automatically generated sentences.
+
+These chatbots may not work using the windows command line or the
+windows IDLE GUI.
+"""
+from __future__ import print_function
+
+from nltk.chat.util import Chat
+from nltk.chat.eliza import eliza_chat
+from nltk.chat.iesha import iesha_chat
+from nltk.chat.rude import rude_chat
+from nltk.chat.suntsu import suntsu_chat
+from nltk.chat.zen import zen_chat
+
+bots = [
+    (eliza_chat, 'Eliza (psycho-babble)'),
+    (iesha_chat, 'Iesha (teen anime junky)'),
+    (rude_chat, 'Rude (abusive bot)'),
+    (suntsu_chat, 'Suntsu (Chinese sayings)'),
+    (zen_chat, 'Zen (gems of wisdom)'),
+]
+
+
+def chatbots():
+    import sys
+
+    print('Which chatbot would you like to talk to?')
+    botcount = len(bots)
+    for i in range(botcount):
+        print('  %d: %s' % (i + 1, bots[i][1]))
+    while True:
+        print('\nEnter a number in the range 1-%d: ' % botcount, end=' ')
+        choice = sys.stdin.readline().strip()
+        if choice.isdigit() and (int(choice) - 1) in range(botcount):
+            break
+        else:
+            print('   Error: bad chatbot number')
+
+    chatbot = bots[int(choice) - 1][0]
+    chatbot()