Build a Chatbot using Flask in 5 minutes
Sahil Rajput
Originally published at
dev.to
・3 min read
Few weeks back I wrote a post Build your first ChatBot in 5 minutes.
That bot was cool and you can talk through terminal. Today, let’s try to build the same bot with Flask.
So, we will use ChatterBot which is a machine learning, conversational dialog engine for creating chat bots.
If you haven’t read my previous post go here
Install ChatterBot
$ pip install ChatterBot
Install Flask
$ pip install Flask
Create a file
app.py and open it
#import files
from flask import Flask, render_template, request
from chatterbot import ChatBot
from chatterbot.trainers import ChatterBotCorpusTrainer
from chatterbot.trainers import ListTrainer
Create a flask app
app = Flask(__name__)
and as we have seen in my previous post
bot = ChatBot("Candice")
bot.set_trainer(ListTrainer)
bot.set_trainer(ChatterBotCorpusTrainer)
bot.train("chatterbot.corpus.english")
and after this
@app.route("/")
def home():
return render_template("home.html")
@app.route("/get")
def get_bot_response():
userText = request.args.get('msg')
return str(bot.get_response(userText))
if __name__ == "__main__":
app.run()
So, as we can see we need to create a home.html file as a frontend.
Create a folder “templates” and inside that create a file home.html.
templates/home.html
Open home.html
<!DOCTYPE html>
<html>
<title>Candice</title>
<body>
<center>
<h1>
Your Personal ChatBot
</h1>
</center>
<div>
<p>
<center><span>Hi! I'm Candice your personal ChatBot</span></center>
</p>
</div>
<div id="userInput">
<input id="textInput" type="text" name="msg" placeholder="Message" />
</div>
</body>
</html>
So, this is just a basic structure let’s add some css to it. We are not creating another file for css, we are just adding style into home.html
<head>
<link
rel="shortcut icon"
type="image/x-icon"
href="https://user-images.githubusercontent.com/20112458/49326597-773b7280-f57a-11e8-853d-20ed61d18b0d.png"
/>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<style>
body {
font-family: monospace;
}
h1 {
background-color: yellow;
display: inline-block;
font-size: 3em;
margin: 0;
padding: 14px;
}
h3 {
color: black;
font-size: 20px;
margin-top: 3px;
text-align: center;
}
#chatbox {
margin-left: auto;
margin-right: auto;
width: 40%;
margin-top: 60px;
}
#userInput {
margin-left: auto;
margin-right: auto;
width: 40%;
margin-top: 60px;
}
#textInput {
width: 90%;
border: none;
border-bottom: 3px solid black;
font-family: monospace;
font-size: 17px;
}
.userText {
color: white;
font-family: monospace;
font-size: 17px;
text-align: right;
line-height: 30px;
}
.userText span {
background-color: #808080;
padding: 10px;
border-radius: 2px;
}
.botText {
color: white;
font-family: monospace;
font-size: 17px;
text-align: left;
line-height: 30px;
}
.botText span {
background-color: #4169e1;
padding: 10px;
border-radius: 2px;
}
#tidbit {
position: absolute;
bottom: 0;
right: 0;
width: 300px;
}
.boxed {
margin-left: auto;
margin-right: auto;
width: 78%;
margin-top: 60px;
border: 1px solid green;
}
.box {
border: 2px solid black;
}
</style>
</head>
Now, after that let’s change body structure.
<body>
<center>
<h1>
<img
src="https://user-images.githubusercontent.com/20112458/49326597-773b7280-f57a-11e8-853d-20ed61d18b0d.png"
alt="CANDICE"
style="width:40px;height:40px;"
/>Your Personal ChatBot
</h1>
</center>
<div class="box"></div>
<div class="boxed">
<div>
<div id="chatbox">
<img
src="https://user-images.githubusercontent.com/20112458/49326597-773b7280-f57a-11e8-853d-20ed61d18b0d.png"
alt="CANDICE"
style="width:40px;height:40px;"
/>
<p class="botText">
<span>Hi! I'm Candice your personal ChatBot</span>
</p>
</div>
<div id="userInput">
<input id="textInput" type="text" name="msg" placeholder="Message" />
</div>
</div>
</div>
</body>
Now, if we type something nothing will happen. So, let’s add some script
<script>
function getBotResponse() {
var rawText = $("#textInput").val();
var userHtml = '<p class="userText"><span>' + rawText + "</span></p>";
$("#textInput").val("");
$("#chatbox").append(userHtml);
document
.getElementById("userInput")
.scrollIntoView({ block: "start", behavior: "smooth" });
$.get("/get", { msg: rawText }).done(function(data) {
var botHtml = '<p class="botText"><span>' + data + "</span></p>";
$("#chatbox").append(botHtml);
document
.getElementById("userInput")
.scrollIntoView({ block: "start", behavior: "smooth" });
});
}
$("#textInput").keypress(function(e) {
if (e.which == 13) {
getBotResponse();
}
});
</script>
Now, you will see whatever you write will be shown on the ChatBox but your chatbot will not give any reply.
So, to do that let’s run your app.py
$ python app.py
So, go to the link and chat with your personal ChatBot
You can find the full source code on my Github.
Posted on Nov 1 '18 by:
Discussion
You might enjoy Stream's react components: getstream.io/chat/react-chat/tutor...
We have a lot of AI related tutorials coming up btw. Message me if you're interested in doing some freelance writing.
Great.
You can mail the details at: sahil.rajput.0196@gmail.com
This error showen here Please help me!
File "C:\Users\sangv\AppData\Local\Programs\Python\Python38\lib\site-packages\chatterbot\chatterbot.py", line 35, in init
self.storage = utils.initialize_class(storage_adapter, **kwargs)
File "C:\Users\sangv\AppData\Local\Programs\Python\Python38\lib\site-packages\chatterbot\utils.py", line 54, in initialize_class
return Class(*args, **kwargs)
File "C:\Users\sangv\AppData\Local\Programs\Python\Python38\lib\site-packages\chatterbot\storage\sql_storage.py", line 22, in init
from sqlalchemy import create_engine
File "C:\Users\sangv\AppData\Local\Programs\Python\Python38\lib\site-packages\sqlalchemy_init.py", line 8, in
from . import util as _util # noqa
File "C:\Users\sangv\AppData\Local\Programs\Python\Python38\lib\site-packages\sqlalchemy\util__init_.py", line 14, in
from ._collections import coerce_generator_arg # noqa
File "C:\Users\sangv\AppData\Local\Programs\Python\Python38\lib\site-packages\sqlalchemy\util_collections.py", line 16, in
from .compat import binary_types
File "C:\Users\sangv\AppData\Local\Programs\Python\Python38\lib\site-packages\sqlalchemy\util\compat.py", line 264, in
time_func = time.clock
AttributeError: module 'time' has no attribute 'clock'
C:\Users\sangv\Desktop>python app.py
Traceback (most recent call last):
File "app.py", line 5, in
from time import clock
ImportError: cannot import name 'clock' from 'time' (unknown location)
C:\Users\sangv\Desktop>python
Python 3.8.2 (tags/v3.8.2:7b3ab59, Feb 25 2020, 23:03:10) [MSC v.1916 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
THIS ERROR IS OCCURING WHILE RUNNING
PLEASE TELL ME WHAT SHOULD I DO?
Can you please explain the code written inside the
which versions you have used ?
i am getting error while installing chatterbot.
please reply soon.
thank you
stop your antivirus, and start installing the module again
Can you please explain the script???
I am having the below error.
Traceback (most recent call last):
File "app.py", line 9, in
bot.set_trainer(ListTrainer)
AttributeError: 'ChatBot' object has no attribute 'set_trainer'
Use
trainer = ChatterBotCorpusTrainer(bot)
trainer.train('chatterbot.corpus.english')
That's good but one suggestion is when the user clicks the link please provide open in a new tab mode so that the users will read your entire post.