Chatterbot GUI Front End - Machine Learning

Initial checkin of a GUI front-end to the Chatterbot Machine Learning software package.

Uses graphical progress meters to show training progress
Provides a "chat-window" style interface for conversing

Demo_Chatterbot.py

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+import PySimpleGUI as gui
+from chatterbot import ChatBot
+import chatterbot.utils
+
+'''
+Demo_Chatterbot.py
+A GUI wrapped arouind the Chatterbot package.
+The GUI is used to show progress bars during the training process and 
+to collect user input that is sent to the chatbot.  The reply is displayed in the GUI window
+'''
+
+# redefine the chatbot text based progress bar with a graphical one
+def print_progress_bar(description, iteration_counter, total_items, progress_bar_length=20):
+    gui.EasyProgressMeter(description, iteration_counter, total_items)
+
+chatterbot.utils.print_progress_bar = print_progress_bar
+
+chatbot = ChatBot('Ron Obvious', trainer='chatterbot.trainers.ChatterBotCorpusTrainer')
+
+# Train based on the english corpus
+chatbot.train("chatterbot.corpus.english")
+
+################# GUI #################
+with gui.FlexForm('Chat Window', auto_size_text=True, default_element_size=(30, 2)) as form:
+    layout = [ [gui.Output(size=(80, 20))],
+               [gui.Multiline(size=(70, 5), enter_submits=True),
+               gui.ReadFormButton('SEND', bind_return_key=True), gui.SimpleButton('EXIT')]]
+
+    form.Layout(layout)
+    # ---===--- Loop taking in user input and using it to query HowDoI web oracle --- #
+    while True:
+        button, (value,) = form.Read()
+        if button != 'SEND':
+            break
+        print(value.rstrip())
+        # send the user input to chatbot to get a response
+        response = chatbot.get_response(value.rstrip())
+        print(response)