tut3.py

from tkinter import *
import requests, time

window = Tk()
window.title('Chat')
messages = Text(window)
messages.pack()
url = 'https://chatapi2.herokuapp.com/test'
r = requests.get(url)
r = requests.get(url + '/read')
wrt = r.text
wrt = wrt.replace(';', '    ')
messages.insert(INSERT, wrt + '\n')

input_user = StringVar()
input_field = Entry(window, text=input_user)
input_field.pack(side='bottom', fill='x', expand='true')

input_msg = StringVar()
input_field1 = Entry(window, text=input_msg)
input_field1.pack(side='bottom', fill='x', expand='true')

def upmsg(event):
    messages.delete(1.0, END)
    r = requests.get(url + '/read')
    wrt = r.text
    wrt = wrt.replace(';', '    ')
    messages.insert(INSERT, wrt + '\n')

def Enter_pressed(event):
    input_get = input_field.get()
    input_get1 = input_field1.get()
    messages.delete(1.0, END)
    ttt = requests.get(url + '/write/' + input_get1 + '/' + input_get)
    messages.delete(1.0, END)
    r = requests.get(url + '/read')
    wrt = r.text
    wrt = wrt.replace(';', '    ')
    messages.insert(INSERT, wrt + '\n')
    return "break"

frame = Frame(window)
window.bind("<Control-r>", upmsg)
window.bind("<Return>", Enter_pressed)
frame.pack()

window.mainloop()