Chatbots are computer program that allows user to interact using input methods. The Application of chatbots is to interact with customers in big enterprises or companies and resolve their queries. Chatbots are mainly built for answering standard FAQs.
The benefit of this type of system is that customer is no longer required to follow the same traditional mean of communication Instead they can just chat with the bot and can resolve their query.
Example 1) This is a simple GUI (Graphical User Interface) chat application where users can interact with the bot.
Prerequisites: Tkinter
pip install tkinter
Example
Python
from tkinter import *# GUIroot = Tk()root.title("Chatbot")BG_GRAY = "#ABB2B9"BG_COLOR = "#17202A"TEXT_COLOR = "#EAECEE"FONT = "Helvetica 14"FONT_BOLD = "Helvetica 13 bold"# Send functiondef send(): send = "You -> " + e.get() txt.insert(END, "\n" + send) user = e.get().lower() if (user == "hello"): txt.insert(END, "\n" + "Bot -> Hi there, how can I help?") elif (user == "hi" or user == "hii" or user == "hiiii"): txt.insert(END, "\n" + "Bot -> Hi there, what can I do for you?") elif (user == "how are you"): txt.insert(END, "\n" + "Bot -> fine! and you") elif (user == "fine" or user == "i am good" or user == "i am doing good"): txt.insert(END, "\n" + "Bot -> Great! how can I help you.") elif (user == "thanks" or user == "thank you" or user == "now its my time"): txt.insert(END, "\n" + "Bot -> My pleasure !") elif (user == "what do you sell" or user == "what kinds of items are there" or user == "have you something"): txt.insert(END, "\n" + "Bot -> We have coffee and tea") elif (user == "tell me a joke" or user == "tell me something funny" or user == "crack a funny line"): txt.insert( END, "\n" + "Bot -> What did the buffalo say when his son left for college? Bison.! ") elif (user == "goodbye" or user == "see you later" or user == "see yaa"): txt.insert(END, "\n" + "Bot -> Have a nice day!") else: txt.insert(END, "\n" + "Bot -> Sorry! I didn't understand that") e.delete(0, END)lable1 = Label(root, bg=BG_COLOR, fg=TEXT_COLOR, text="Welcome", font=FONT_BOLD, pady=10, width=20, height=1).grid( row=0)txt = Text(root, bg=BG_COLOR, fg=TEXT_COLOR, font=FONT, width=60)txt.grid(row=1, column=0, columnspan=2)scrollbar = Scrollbar(txt)scrollbar.place(relheight=1, relx=0.974)e = Entry(root, bg="#2C3E50", fg=TEXT_COLOR, font=FONT, width=55)e.grid(row=2, column=0)send = Button(root, text="Send", font=FONT_BOLD, bg=BG_GRAY, command=send).grid(row=2, column=1)root.mainloop() |
Output:
Example 2: This is a simple GUI (Graphical User Interface) chat application where multiple users can connect with each other in a client-server architecture i.e the clients will interact with the help of the server.
Prerequisites: Tkinter, Socket Programming, and Multithreading
Server Side Script: This script file name is ‘client.py'(say). Since only the clients will interact the server script does not have a GUI.
Example
Python3
# import socket libraryimport socket# import threading libraryimport threading# Choose a port that is freePORT = 5000# An IPv4 address is obtained# for the server.SERVER = socket.gethostbyname(socket.gethostname())# Address is stored as a tupleADDRESS = (SERVER, PORT)# the format in which encoding# and decoding will occurFORMAT = "utf-8"# Lists that will contains# all the clients connected to# the server and their names.clients, names = [], []# Create a new socket for# the serverserver = socket.socket(socket.AF_INET, socket.SOCK_STREAM)# bind the address of the# server to the socketserver.bind(ADDRESS)# function to start the connectiondef startChat(): print("server is working on " + SERVER) # listening for connections server.listen() while True: # accept connections and returns # a new connection to the client # and the address bound to it conn, addr = server.accept() conn.send("NAME".encode(FORMAT)) # 1024 represents the max amount # of data that can be received (bytes) name = conn.recv(1024).decode(FORMAT) # append the name and client # to the respective list names.append(name) clients.append(conn) print(f"Name is :{name}") # broadcast message broadcastMessage(f"{name} has joined the chat!".encode(FORMAT)) conn.send('Connection successful!'.encode(FORMAT)) # Start the handling thread thread = threading.Thread(target=handle, args=(conn, addr)) thread.start() # no. of clients connected # to the server print(f"active connections {threading.activeCount()-1}")# method to handle the# incoming messagesdef handle(conn, addr): print(f"new connection {addr}") connected = True while connected: # receive message message = conn.recv(1024) # broadcast message broadcastMessage(message) # close the connection conn.close()# method for broadcasting# messages to the each clientsdef broadcastMessage(message): for client in clients: client.send(message)# call the method to# begin the communicationstartChat() |
Client-Side Script:
Python3
# import all the required modulesimport socketimport threadingfrom tkinter import *from tkinter import fontfrom tkinter import ttk# import all functions /# everything from chat.py filefrom chat import *PORT = 5050SERVER = "192.168.0.103"ADDRESS = (SERVER, PORT)FORMAT = "utf-8"# Create a new client socket# and connect to the serverclient = socket.socket(socket.AF_INET, socket.SOCK_STREAM)client.connect(ADDRESS)# GUI class for the chatclass GUI: # constructor method def __init__(self): # chat window which is currently hidden self.Window = Tk() self.Window.withdraw() # login window self.login = Toplevel() # set the title self.login.title("Login") self.login.resizable(width=False, height=False) self.login.configure(width=400, height=300) # create a Label self.pls = Label(self.login, text="Please login to continue", justify=CENTER, font="Helvetica 14 bold") self.pls.place(relheight=0.15, relx=0.2, rely=0.07) # create a Label self.labelName = Label(self.login, text="Name: ", font="Helvetica 12") self.labelName.place(relheight=0.2, relx=0.1, rely=0.2) # create a entry box for # tyoing the message self.entryName = Entry(self.login, font="Helvetica 14") self.entryName.place(relwidth=0.4, relheight=0.12, relx=0.35, rely=0.2) # set the focus of the cursor self.entryName.focus() # create a Continue Button # along with action self.go = Button(self.login, text="CONTINUE", font="Helvetica 14 bold", command=lambda: self.goAhead(self.entryName.get())) self.go.place(relx=0.4, rely=0.55) self.Window.mainloop() def goAhead(self, name): self.login.destroy() self.layout(name) # the thread to receive messages rcv = threading.Thread(target=self.receive) rcv.start() # The main layout of the chat def layout(self, name): self.name = name # to show chat window self.Window.deiconify() self.Window.title("CHATROOM") self.Window.resizable(width=False, height=False) self.Window.configure(width=470, height=550, bg="#17202A") self.labelHead = Label(self.Window, bg="#17202A", fg="#EAECEE", text=self.name, font="Helvetica 13 bold", pady=5) self.labelHead.place(relwidth=1) self.line = Label(self.Window, width=450, bg="#ABB2B9") self.line.place(relwidth=1, rely=0.07, relheight=0.012) self.textCons = Text(self.Window, width=20, height=2, bg="#17202A", fg="#EAECEE", font="Helvetica 14", padx=5, pady=5) self.textCons.place(relheight=0.745, relwidth=1, rely=0.08) self.labelBottom = Label(self.Window, bg="#ABB2B9", height=80) self.labelBottom.place(relwidth=1, rely=0.825) self.entryMsg = Entry(self.labelBottom, bg="#2C3E50", fg="#EAECEE", font="Helvetica 13") # place the given widget # into the gui window self.entryMsg.place(relwidth=0.74, relheight=0.06, rely=0.008, relx=0.011) self.entryMsg.focus() # create a Send Button self.buttonMsg = Button(self.labelBottom, text="Send", font="Helvetica 10 bold", width=20, bg="#ABB2B9", command=lambda: self.sendButton(self.entryMsg.get())) self.buttonMsg.place(relx=0.77, rely=0.008, relheight=0.06, relwidth=0.22) self.textCons.config(cursor="arrow") # create a scroll bar scrollbar = Scrollbar(self.textCons) # place the scroll bar # into the gui window scrollbar.place(relheight=1, relx=0.974) scrollbar.config(command=self.textCons.yview) self.textCons.config(state=DISABLED) # function to basically start the thread for sending messages def sendButton(self, msg): self.textCons.config(state=DISABLED) self.msg = msg self.entryMsg.delete(0, END) snd = threading.Thread(target=self.sendMessage) snd.start() # function to receive messages def receive(self): while True: try: message = client.recv(1024).decode(FORMAT) # if the messages from the server is NAME send the client's name if message == 'NAME': client.send(self.name.encode(FORMAT)) else: # insert messages to text box self.textCons.config(state=NORMAL) self.textCons.insert(END, message+"\n\n") self.textCons.config(state=DISABLED) self.textCons.see(END) except: # an error will be printed on the command line or console if there's an error print("An error occurred!") client.close() break # function to send messages def sendMessage(self): self.textCons.config(state=DISABLED) while True: message = (f"{self.name}: {self.msg}") client.send(message.encode(FORMAT)) break# create a GUI class objectg = GUI() |
OUTPUT :
Login Window:
CLIENT 1:
CLIENT 2:
CLIENT 3:
SERVER:
