Tkinter Chatbot Speech Bubbles design - python-3.x

Question

First I'm sorry for my bad english. I am designing a chatbot with the tkinter as an amateur. I want to add whatsapp-like balloons to the dialog window. I also want the writings to go from the bottom up in the window. I tried to do it as a canvas but it didn't happen. I tried as a label but gave an error.I'd appreciate it if you could help me with that. "TypeError: can only concatenate str (not "Canvas") to str".
The sample design I want
import tkinter as tk
from tkinter import *
import random
import re
import datetime
from tkinter import messagebox
from tkinter.font import Font
root = tk.Tk()
root.title('deneme')
root.geometry('410x600+400+100')
root.config(bg='lightblue')
buton_işlevi=StringVar(root)
buton_işlevi.set("")
#buton oluşturma ve konumu
buton = tk.Button(root, width=10, height=2, relief='raised',state='active',command=lambda :add_text(pencere,giriş,buton_işlevi))
buton.pack()
buton.place(x=310, y=550)
buton.config(text='GÖNDER', bg='lightblue', font='Verdana 8 bold')
root.bind('<Return>',lambda x:add_text(pencere,giriş,buton_işlevi))
#mesaj yazma alanı ve konumu
giriş = tk.Entry(root, textvariable=buton_işlevi,font=('NanumGothic', 12))
giriş.pack()
giriş.place(x=10, y=550, width=290, height=40)
canvas = Canvas(width=300, height=300, bg='white')
canvas.create_oval(200, 200, 300, 300, width=5, fill='red')
#pencere ve konumu
pencere = tk.Text(root, bg='white', yscrollcommand='YES', font=('NanumGothic', 12))
pencere.config(state='disabled')
pencere.pack()
pencere.place(x=10, y=10, width=390, height=530)
#bot ve user mesaj arka plan rengi
pencere.tag_config('bot_renk', background='#fccbc7', foreground='black')
pencere.tag_config('user_renk', background='yellow')
pencere.config(state='normal')
#bot karşılama mesajı
karşılama = 'Hoşgeldiniz'
soru1 = ['merhaba', 'selam']
cevap1 = ["sanada", "iyiyim"]
soru2 = ["deneme", "merhaba", "selam"]
pencere.insert('end', '\nBOT:\t')
pencere.insert('end', karşılama +'\n', 'bot_renk')
#Mesaj ayarları
def add_text(mw,st,imsg):
#mw:message window/st:state/imsg:input message
bot_mesaj=""
user_mesaj = imsg.get()
if user_mesaj in soru1:
user_mesaj='\nUSER :\t'+imsg.get()+'\n'+canvas
bot_mesaj = '\nBOT :\t'+ random.choice(cevap1)+'\n'
mw.config(state='normal')
mw.insert('end',user_mesaj, 'user_renk')
mw.insert('end',bot_mesaj, 'bot_renk')
imsg.set("")
mw.see('end')
mw.config(state='disabled')
elif user_mesaj in soru2:
user_mesaj='\nERÇİN :\t'+imsg.get()+'\n'
bot_mesaj='\nBOT :\t'+ random.choice(cevap2)+'\n'
mw.config(state='normal')
mw.insert('end',user_mesaj, 'user_renk')
mw.insert('end',bot_mesaj, 'bot_renk')
imsg.set("")
mw.see('end')
mw.config(state='disabled')
else :
user_mesaj='\nUSER:\t' +imsg.get()+'\n'
bot_mesaj='\nBOT:\t' + 'Bu kelimeyi henüz öğrenmedim' +'\n'
mw.config(state='normal')
mw.insert('end',user_mesaj, 'user_renk')
mw.insert('end',bot_mesaj, 'bot_renk')
imsg.set("")
mw.see('end')
mw.config(state='disabled')
root.mainloop()

Answer 1

I ran your code and there is no error. But since you mentioned about Whatsapp bubble, here is a basic version you can work on.
from tkinter import *
from datetime import datetime
root = Tk()
root.config(bg="lightblue")
canvas = Canvas(root, width=200, height=200,bg="white")
canvas.grid(row=0,column=0,columnspan=2)
bubbles = []
class BotBubble:
def __init__(self,master,message=""):
self.master = master
self.frame = Frame(master,bg="light grey")
self.i = self.master.create_window(90,160,window=self.frame)
Label(self.frame,text=datetime.now().strftime("%Y-%m-%d %H:%m"),font=("Helvetica", 7),bg="light grey").grid(row=0,column=0,sticky="w",padx=5)
Label(self.frame, text=message,font=("Helvetica", 9),bg="light grey").grid(row=1, column=0,sticky="w",padx=5,pady=3)
root.update_idletasks()
self.master.create_polygon(self.draw_triangle(self.i), fill="light grey", outline="light grey")
def draw_triangle(self,widget):
x1, y1, x2, y2 = self.master.bbox(widget)
return x1, y2 - 10, x1 - 15, y2 + 10, x1, y2
def send_message():
if bubbles:
canvas.move(ALL, 0, -65)
a = BotBubble(canvas,message=entry.get())
bubbles.append(a)
entry = Entry(root,width=26)
entry.grid(row=1,column=0)
Button(root,text="Send",command=send_message).grid(row=1,column=1)
root.mainloop()